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article-21616_41 | Familial Short Stature -- Treatment / Management | The studies conducted thus far on rGH therapy in SS, which have included children with FSS, have had several limitations like insufficient numbers, lack of control groups, different dosages of rGH, and undiagnosed conditions producing pathological SS. | Familial Short Stature -- Treatment / Management. The studies conducted thus far on rGH therapy in SS, which have included children with FSS, have had several limitations like insufficient numbers, lack of control groups, different dosages of rGH, and undiagnosed conditions producing pathological SS. |
article-21616_42 | Familial Short Stature -- Treatment / Management | Given the lack of definitive evidence of the benefits of rGH in FSS, especially a lack of benefit in self-esteem and/or quality of life, the FDA has not approved treatment with rGH for this indication. The treatment cost is prohibitive, and the response in both familial and non-familial ISS is very unpredictable. More well-designed studies are needed in this area, and any attempt to use GH for FSS should be considered as "off-label." Recombinant IGF1 is useful in IGF1 deficiency due to gene deletions or mutations. | Familial Short Stature -- Treatment / Management. Given the lack of definitive evidence of the benefits of rGH in FSS, especially a lack of benefit in self-esteem and/or quality of life, the FDA has not approved treatment with rGH for this indication. The treatment cost is prohibitive, and the response in both familial and non-familial ISS is very unpredictable. More well-designed studies are needed in this area, and any attempt to use GH for FSS should be considered as "off-label." Recombinant IGF1 is useful in IGF1 deficiency due to gene deletions or mutations. |
article-21616_43 | Familial Short Stature -- Treatment / Management | Attention must be given to detect psychological problems in children with FSS, which may be the result of teasing, bullying, and discrimination by peers as well as society. Although it is generally believed that such problems are universal in children with SS, there may be a selection bias. This is because the majority of the data are from pediatric clinics, where children with problems are seen. In the Wessex growth study, a large sample of community-dwelling children whose only problem was SS was studied. Results did not show increased cognitive, psychosocial, or maladaptive dysfunction, thus dispelling the myth that SS universally has psychosocial issues. [26] | Familial Short Stature -- Treatment / Management. Attention must be given to detect psychological problems in children with FSS, which may be the result of teasing, bullying, and discrimination by peers as well as society. Although it is generally believed that such problems are universal in children with SS, there may be a selection bias. This is because the majority of the data are from pediatric clinics, where children with problems are seen. In the Wessex growth study, a large sample of community-dwelling children whose only problem was SS was studied. Results did not show increased cognitive, psychosocial, or maladaptive dysfunction, thus dispelling the myth that SS universally has psychosocial issues. [26] |
article-21616_44 | Familial Short Stature -- Differential Diagnosis | The most important and equally common condition that has to be differentiated from familial short stature (FSS) is CDGP. In most cases, the differentiation is simple. Children with CDGP resemble FSS because they have normal birth length and weight; they have a "catch down growth" that crosses percentiles and have a normal growth rate. However, they differ since they are slightly above the growth curve, develop puberty later, and have a bone age that is delayed by at least two years. The final height in CDGP is much greater than that found in FSS: Height velocity or the rate of linear growth can help to differentiate the causes: Normal height velocity: familial short stature and CDGP. Slow height velocity: growth hormone deficiency. GSS: final height that is below the 3rd percentile. CDGP: final height in the normal range. | Familial Short Stature -- Differential Diagnosis. The most important and equally common condition that has to be differentiated from familial short stature (FSS) is CDGP. In most cases, the differentiation is simple. Children with CDGP resemble FSS because they have normal birth length and weight; they have a "catch down growth" that crosses percentiles and have a normal growth rate. However, they differ since they are slightly above the growth curve, develop puberty later, and have a bone age that is delayed by at least two years. The final height in CDGP is much greater than that found in FSS: Height velocity or the rate of linear growth can help to differentiate the causes: Normal height velocity: familial short stature and CDGP. Slow height velocity: growth hormone deficiency. GSS: final height that is below the 3rd percentile. CDGP: final height in the normal range. |
article-21616_45 | Familial Short Stature -- Differential Diagnosis | The majority of children born small for gestational age (SGA) will catch up with height and weight during the first two years of life. A few, however, fail to catch up and remain short. This type of individual can be distinguished by obtaining a careful history. Other causes of proportionate SS are Turner, Noonan, and Russell-Silver syndromes are differentiated by various associated physical findings and investigations. The children with FSS have an adequate nutritional status and are easily distinguished from states of malnutrition, where weight is affected more than height. Chronic systemic illnesses have features peculiar to their condition and can be easily distinguished from FSS; since children with FSS are healthy and active. Hypothyroidism may present with SS; but have a delayed bone age, deceleration of growth velocity, and other characteristic findings. Thyroid function tests will help confirm the diagnosis. | Familial Short Stature -- Differential Diagnosis. The majority of children born small for gestational age (SGA) will catch up with height and weight during the first two years of life. A few, however, fail to catch up and remain short. This type of individual can be distinguished by obtaining a careful history. Other causes of proportionate SS are Turner, Noonan, and Russell-Silver syndromes are differentiated by various associated physical findings and investigations. The children with FSS have an adequate nutritional status and are easily distinguished from states of malnutrition, where weight is affected more than height. Chronic systemic illnesses have features peculiar to their condition and can be easily distinguished from FSS; since children with FSS are healthy and active. Hypothyroidism may present with SS; but have a delayed bone age, deceleration of growth velocity, and other characteristic findings. Thyroid function tests will help confirm the diagnosis. |
article-21616_46 | Familial Short Stature -- Differential Diagnosis | Cushing syndrome is a rare cause of SS. In this case, children are sick, have distinguishing physical findings, delayed bone age, growth deceleration, and typical laboratory test results. | Familial Short Stature -- Differential Diagnosis. Cushing syndrome is a rare cause of SS. In this case, children are sick, have distinguishing physical findings, delayed bone age, growth deceleration, and typical laboratory test results. |
article-21616_47 | Familial Short Stature -- Differential Diagnosis | Classical GH deficiency has physical features of the condition, symptoms, signs of deficiencies of other pituitary hormones, delayed bone age, very significant SS, growth deceleration that extends from onset of the disease and continues throughout, a low IGF1, IGFBP3, and poor GH responses to stimulation tests. It is when GH deficiency is partial or incomplete that distinguishing it from FSS or CDGP becomes difficult. Here, the GH stimulation tests are not sensitive enough to make that determination. [21] | Familial Short Stature -- Differential Diagnosis. Classical GH deficiency has physical features of the condition, symptoms, signs of deficiencies of other pituitary hormones, delayed bone age, very significant SS, growth deceleration that extends from onset of the disease and continues throughout, a low IGF1, IGFBP3, and poor GH responses to stimulation tests. It is when GH deficiency is partial or incomplete that distinguishing it from FSS or CDGP becomes difficult. Here, the GH stimulation tests are not sensitive enough to make that determination. [21] |
article-21616_48 | Familial Short Stature -- Differential Diagnosis | In pre-pubertal boys older than 11 years and girls older than ten years, it is important to prime with sex steroids before GH stimulation studies; otherwise, many children with CDGP (and some with combined FSS and CDGP) may be misdiagnosed as GH deficiency and unnecessarily exposed to rGH therapy. There is a significant difference in the GH response to stimulation when sex-steroid priming is employed. Either 2 mg of 17-beta-estradiol (for both boys and girls) orally two days before the test or testosterone (for boys) 50 mg intramuscularly a day before the procedure is recommended. Obesity blunts GH responses to stimulation testing. Many normal children also show ambiguous responses following a single stimulation procedure. Therefore, it is important to test with two modalities for accurate classification. [21] [27] | Familial Short Stature -- Differential Diagnosis. In pre-pubertal boys older than 11 years and girls older than ten years, it is important to prime with sex steroids before GH stimulation studies; otherwise, many children with CDGP (and some with combined FSS and CDGP) may be misdiagnosed as GH deficiency and unnecessarily exposed to rGH therapy. There is a significant difference in the GH response to stimulation when sex-steroid priming is employed. Either 2 mg of 17-beta-estradiol (for both boys and girls) orally two days before the test or testosterone (for boys) 50 mg intramuscularly a day before the procedure is recommended. Obesity blunts GH responses to stimulation testing. Many normal children also show ambiguous responses following a single stimulation procedure. Therefore, it is important to test with two modalities for accurate classification. [21] [27] |
article-21616_49 | Familial Short Stature -- Prognosis | Children with familial short stature (FSS) will attain their predicted height when the mid-parental height is taken into consideration but will end up as short adults compared to others of the same age, gender, and population. | Familial Short Stature -- Prognosis. Children with familial short stature (FSS) will attain their predicted height when the mid-parental height is taken into consideration but will end up as short adults compared to others of the same age, gender, and population. |
article-21616_50 | Familial Short Stature -- Complications | There are no complications if an expectant approach is adopted in FSS. Psychological problems should be diligently sought and managed early, and efficiently; otherwise, it may affect the child's psyche, school performance, and cause low self-esteem. | Familial Short Stature -- Complications. There are no complications if an expectant approach is adopted in FSS. Psychological problems should be diligently sought and managed early, and efficiently; otherwise, it may affect the child's psyche, school performance, and cause low self-esteem. |
article-21616_51 | Familial Short Stature -- Consultations | Familial short stature is caused by multiple factors, and its effects are not only on the phenotype; rather, they are on the psyche of the patients and their families as well. Consequently, it is imperative to take on board different disciplines to enhance patient outcomes. Following are the mandatory consultations: Primary care (family medicine, pediatrics) Pediatric endocrinology Laboratory medicine Clinical genetics and molecular medicine Clinical psychology | Familial Short Stature -- Consultations. Familial short stature is caused by multiple factors, and its effects are not only on the phenotype; rather, they are on the psyche of the patients and their families as well. Consequently, it is imperative to take on board different disciplines to enhance patient outcomes. Following are the mandatory consultations: Primary care (family medicine, pediatrics) Pediatric endocrinology Laboratory medicine Clinical genetics and molecular medicine Clinical psychology |
article-21616_52 | Familial Short Stature -- Deterrence and Patient Education | Education of the family coping with classic familial short stature (FSS) is extremely important to avoid unnecessary investigations and treatments. They should be made to understand why short parents have short children. Simple terminology to explain the genetic nature of the condition should be employed. For children exhibiting combined FSS and CDGP, the SS may be more profound, and families should be counseled to engage in investigations to exclude pathological SS. At the same time, if evaluation implicates monogenic disorders that warrant more extensive testing, the appropriate approach should be pursued. The services of a clinical psychologist will sometimes be necessary. Such a professional can play a vital role in helping the child with FSS and the family cope with unforeseen life experiences. | Familial Short Stature -- Deterrence and Patient Education. Education of the family coping with classic familial short stature (FSS) is extremely important to avoid unnecessary investigations and treatments. They should be made to understand why short parents have short children. Simple terminology to explain the genetic nature of the condition should be employed. For children exhibiting combined FSS and CDGP, the SS may be more profound, and families should be counseled to engage in investigations to exclude pathological SS. At the same time, if evaluation implicates monogenic disorders that warrant more extensive testing, the appropriate approach should be pursued. The services of a clinical psychologist will sometimes be necessary. Such a professional can play a vital role in helping the child with FSS and the family cope with unforeseen life experiences. |
article-21616_53 | Familial Short Stature -- Pearls and Other Issues | Children with GSS will ultimately attain a final height that is below the 3rd percentile. Whereas children with CDGP will achieve a final height in the normal range. However, this differentiation may not be absolute. The height velocity is normal in children with familial (or genetic) short stature. But it is slowed in children presenting with GH or thyroid deficiencies. | Familial Short Stature -- Pearls and Other Issues. Children with GSS will ultimately attain a final height that is below the 3rd percentile. Whereas children with CDGP will achieve a final height in the normal range. However, this differentiation may not be absolute. The height velocity is normal in children with familial (or genetic) short stature. But it is slowed in children presenting with GH or thyroid deficiencies. |
article-21616_54 | Familial Short Stature -- Enhancing Healthcare Team Outcomes | Quite often, in practice, the primary care providers must be familiar with the entity of familial short stature (FSS) as it is frequently encountered. Indeed, they should be prepared to try to convince anxious parents that rGH treatment has not been approved for FSS. This is in contrast to some cases of ISS, where some studies have (not conclusively) demonstrated benefit. [22] [23] [24] [Level 2] | Familial Short Stature -- Enhancing Healthcare Team Outcomes. Quite often, in practice, the primary care providers must be familiar with the entity of familial short stature (FSS) as it is frequently encountered. Indeed, they should be prepared to try to convince anxious parents that rGH treatment has not been approved for FSS. This is in contrast to some cases of ISS, where some studies have (not conclusively) demonstrated benefit. [22] [23] [24] [Level 2] |
article-21616_55 | Familial Short Stature -- Enhancing Healthcare Team Outcomes | The laboratory medicine personnel should be provided with a summary of the child's clinical history. Coordination between the laboratory staff and the provider will help conduct tests such as GH stimulation more accurately. | Familial Short Stature -- Enhancing Healthcare Team Outcomes. The laboratory medicine personnel should be provided with a summary of the child's clinical history. Coordination between the laboratory staff and the provider will help conduct tests such as GH stimulation more accurately. |
article-21616_56 | Familial Short Stature -- Enhancing Healthcare Team Outcomes | Occasionally, genetic tests may be needed, and extensive counseling on testing, avoidance of unnecessary procedures, and adaptation to the environment will need inter-professional communication with the provider, laboratory, nurses, and clinical psychologists to improve outcomes and enhance team performance. | Familial Short Stature -- Enhancing Healthcare Team Outcomes. Occasionally, genetic tests may be needed, and extensive counseling on testing, avoidance of unnecessary procedures, and adaptation to the environment will need inter-professional communication with the provider, laboratory, nurses, and clinical psychologists to improve outcomes and enhance team performance. |
article-21616_57 | Familial Short Stature -- Review Questions | Access free multiple choice questions on this topic. Click here for a simplified version. Comment on this article. | Familial Short Stature -- Review Questions. Access free multiple choice questions on this topic. Click here for a simplified version. Comment on this article. |
article-28746_0 | Schatzki Ring -- Continuing Education Activity | A Schatzki ring is a circular membrane of mucosa and submucosa that forms at the squamocolumnar junction of the distal esophagus. Schatzki rings appear as thin membranous structures that do not contain any muscularis propria. The upper surface is covered with squamous epithelium, and the lower surface is covered with columnar epithelium. Schatzki rings are always associated with hiatal hernias. This activity describes the pathophysiology, etiology, presentation, and management of Schatzki rings and highlights the role of the interprofessional team in caring for patients with this condition. | Schatzki Ring -- Continuing Education Activity. A Schatzki ring is a circular membrane of mucosa and submucosa that forms at the squamocolumnar junction of the distal esophagus. Schatzki rings appear as thin membranous structures that do not contain any muscularis propria. The upper surface is covered with squamous epithelium, and the lower surface is covered with columnar epithelium. Schatzki rings are always associated with hiatal hernias. This activity describes the pathophysiology, etiology, presentation, and management of Schatzki rings and highlights the role of the interprofessional team in caring for patients with this condition. |
article-28746_1 | Schatzki Ring -- Continuing Education Activity | Objectives: Identify the etiology of Schatzki rings. Describe the presentation of a patient with a Schatzki ring. Review the treatment options for Schatzki rings. Explain the importance of optimizing care coordination amongst interprofessional team members to improve outcomes for patients with Schatzki rings. Access free multiple choice questions on this topic. | Schatzki Ring -- Continuing Education Activity. Objectives: Identify the etiology of Schatzki rings. Describe the presentation of a patient with a Schatzki ring. Review the treatment options for Schatzki rings. Explain the importance of optimizing care coordination amongst interprofessional team members to improve outcomes for patients with Schatzki rings. Access free multiple choice questions on this topic. |
article-28746_2 | Schatzki Ring -- Introduction | Richard Schatzki was a renowned radiologist who described a ring-like structure in patients with dysphagia in articles from 1953 to 1963, and that structure would later bear his name. Schatzki ring is described as a circular membrane of mucosa and submucosa that is seen at the squamocolumnar junction of the distal esophagus. It appears as a thin membranous structure that does not contain any muscularis propria. It has an upper surface that is covered with squamous epithelium and a lower surface that is covered with columnar epithelium and is always associated with a hiatal hernia. [1] [2] [3] | Schatzki Ring -- Introduction. Richard Schatzki was a renowned radiologist who described a ring-like structure in patients with dysphagia in articles from 1953 to 1963, and that structure would later bear his name. Schatzki ring is described as a circular membrane of mucosa and submucosa that is seen at the squamocolumnar junction of the distal esophagus. It appears as a thin membranous structure that does not contain any muscularis propria. It has an upper surface that is covered with squamous epithelium and a lower surface that is covered with columnar epithelium and is always associated with a hiatal hernia. [1] [2] [3] |
article-28746_3 | Schatzki Ring -- Etiology | As stated previously, Schatzki ring is associated with a hiatal hernia. Gastroesophageal reflux has been thought of as causing the ring. It has been postulated that the creation of a Schatzki ring is the body’s response to frequent acid exposure and a natural way of preventing the development of Barrett esophagus. Studies have shown that Barrett esophagus is less common when a Schatzki ring is present, especially long-segment Barrett’s esophagus. [4] [5] [6] Eosinophilic esophagitis has been associated with Schatzki ring. [7] | Schatzki Ring -- Etiology. As stated previously, Schatzki ring is associated with a hiatal hernia. Gastroesophageal reflux has been thought of as causing the ring. It has been postulated that the creation of a Schatzki ring is the body’s response to frequent acid exposure and a natural way of preventing the development of Barrett esophagus. Studies have shown that Barrett esophagus is less common when a Schatzki ring is present, especially long-segment Barrett’s esophagus. [4] [5] [6] Eosinophilic esophagitis has been associated with Schatzki ring. [7] |
article-28746_4 | Schatzki Ring -- Epidemiology | Schatzki ring is found in 6% to 14% of barium radiographs done routinely. It is noted to be the most common cause of episodic dysphagia for solids and food impactions in adults. There are no known population studies to suggest how common it is among the general population. | Schatzki Ring -- Epidemiology. Schatzki ring is found in 6% to 14% of barium radiographs done routinely. It is noted to be the most common cause of episodic dysphagia for solids and food impactions in adults. There are no known population studies to suggest how common it is among the general population. |
article-28746_5 | Schatzki Ring -- Pathophysiology | As a Schatzki ring develops, it causes narrowing of the distal esophageal lumen that creates an intrinsic mechanical disorder. This will result in symptoms of dysphagia or complications like food impaction when the diameter becomes so small food is unable to pass. The ring does not cause symptoms until it reaches a diameter that obstructs food from passing. Richard Schatski developed the “Schatzki rule,” which was that a ring under 13 mm will always have symptoms, and a ring larger than 25 mm will always be asymptomatic. In cases where food becomes stuck, patients can develop odynophagia or chest pain. [8] [9] [10] | Schatzki Ring -- Pathophysiology. As a Schatzki ring develops, it causes narrowing of the distal esophageal lumen that creates an intrinsic mechanical disorder. This will result in symptoms of dysphagia or complications like food impaction when the diameter becomes so small food is unable to pass. The ring does not cause symptoms until it reaches a diameter that obstructs food from passing. Richard Schatski developed the “Schatzki rule,” which was that a ring under 13 mm will always have symptoms, and a ring larger than 25 mm will always be asymptomatic. In cases where food becomes stuck, patients can develop odynophagia or chest pain. [8] [9] [10] |
article-28746_6 | Schatzki Ring -- Histopathology | As previously described, there is squamous epithelium above the ring and columnar epithelium below it. This differentiates it from esophageal webs, which have squamous (esophageal) epithelium on both sides. In initial studies, it was described as being triangle-shaped on cross-section and formed by a core of connective tissue with an overgrowth of muscularis mucosa and smooth muscle fibers creating an annular band. | Schatzki Ring -- Histopathology. As previously described, there is squamous epithelium above the ring and columnar epithelium below it. This differentiates it from esophageal webs, which have squamous (esophageal) epithelium on both sides. In initial studies, it was described as being triangle-shaped on cross-section and formed by a core of connective tissue with an overgrowth of muscularis mucosa and smooth muscle fibers creating an annular band. |
article-28746_7 | Schatzki Ring -- History and Physical | Most Schatzki rings do not cause symptoms, but the main symptom that does occur is dysphagia and can result in acute dysphagia as a result of food impaction. Symptoms are commonly associated with not very well-chewed meat and are sometimes described as food sticking in the chest, which has been referred to as “Steakhouse syndrome." Symptoms are less commonly associated with globus, which is the sensation of a “lump” or “blockage” between the cricoid and sternal notch. In the case of food impaction, patients can present with odynophagia. | Schatzki Ring -- History and Physical. Most Schatzki rings do not cause symptoms, but the main symptom that does occur is dysphagia and can result in acute dysphagia as a result of food impaction. Symptoms are commonly associated with not very well-chewed meat and are sometimes described as food sticking in the chest, which has been referred to as “Steakhouse syndrome." Symptoms are less commonly associated with globus, which is the sensation of a “lump” or “blockage” between the cricoid and sternal notch. In the case of food impaction, patients can present with odynophagia. |
article-28746_8 | Schatzki Ring -- History and Physical | Key questions to ask pertaining to the location of discomfort in swallowing, which would be expected to be subxiphoid (lower chest/upper abdominal area), and whether symptoms are worse with solids or liquids or both. The extent of symptoms depends on the diameter of the ring, and the largest diameter with symptoms would be less than 25 mm according to the “Schatzki rule.” | Schatzki Ring -- History and Physical. Key questions to ask pertaining to the location of discomfort in swallowing, which would be expected to be subxiphoid (lower chest/upper abdominal area), and whether symptoms are worse with solids or liquids or both. The extent of symptoms depends on the diameter of the ring, and the largest diameter with symptoms would be less than 25 mm according to the “Schatzki rule.” |
article-28746_9 | Schatzki Ring -- Evaluation | Once a patient presents with symptoms suggesting a Schatzki ring, the initial study in evaluation is a barium esophagram. If significant enough, it will show an area of the distal esophagus that is less distensible, creating a ring-like structure on radiographic images. Often, a patient is asked to swallow a substance like a marshmallow or a barium tablet to assess the diameter of the ring. This is often followed by an endoscopy to evaluate the ring and then treat patients with symptoms. If the finding is incidental and the patient has no symptoms, treatment is not necessary until symptoms occur. However, endoscopy is still recommended to rule out other causes of strictures, especially esophageal malignancy. Biopsies should be performed if there is an irregular Z-line at the gastroesophageal junction to assess for Barrett esophagus. Biopsies of the ring can be done as a treatment method as well. [11] [12] | Schatzki Ring -- Evaluation. Once a patient presents with symptoms suggesting a Schatzki ring, the initial study in evaluation is a barium esophagram. If significant enough, it will show an area of the distal esophagus that is less distensible, creating a ring-like structure on radiographic images. Often, a patient is asked to swallow a substance like a marshmallow or a barium tablet to assess the diameter of the ring. This is often followed by an endoscopy to evaluate the ring and then treat patients with symptoms. If the finding is incidental and the patient has no symptoms, treatment is not necessary until symptoms occur. However, endoscopy is still recommended to rule out other causes of strictures, especially esophageal malignancy. Biopsies should be performed if there is an irregular Z-line at the gastroesophageal junction to assess for Barrett esophagus. Biopsies of the ring can be done as a treatment method as well. [11] [12] |
article-28746_10 | Schatzki Ring -- Treatment / Management | The goal of treatment is to increase the diameter of the ring to allow unobstructed passage through the esophagus. Breaking the ring most often does this. Methods of doing so include dilation and/or biopsies of the ring with biopsy forceps. | Schatzki Ring -- Treatment / Management. The goal of treatment is to increase the diameter of the ring to allow unobstructed passage through the esophagus. Breaking the ring most often does this. Methods of doing so include dilation and/or biopsies of the ring with biopsy forceps. |
article-28746_11 | Schatzki Ring -- Treatment / Management | Dilation can be done with bougies or pneumonic balloons. Bougies can be used with a guidewire (Savory dilators), without a guidewire (Maloney dilators), or with a pneumonic balloon dilator. Dilation with a bougie is done without direct visualization of the esophagus, but guidewire placement is done with direct visualization during endoscopy showing the path of the dilator. The pneumonic balloon dilators allow dilation with direct visualization. Fluoroscopy can be used as well to assist with dilation. | Schatzki Ring -- Treatment / Management. Dilation can be done with bougies or pneumonic balloons. Bougies can be used with a guidewire (Savory dilators), without a guidewire (Maloney dilators), or with a pneumonic balloon dilator. Dilation with a bougie is done without direct visualization of the esophagus, but guidewire placement is done with direct visualization during endoscopy showing the path of the dilator. The pneumonic balloon dilators allow dilation with direct visualization. Fluoroscopy can be used as well to assist with dilation. |
article-28746_12 | Schatzki Ring -- Treatment / Management | There has been evidence that doing four quadrant biopsies with jumbo forceps will obliterate a Schatzki ring as well. This allows direct visualization of the treatment since it is done during an endoscopy. The whole ring is not broken with biopsies; therefore, there is some concern that the residual tissue may lead to recurrence, a concern that is being studied further. | Schatzki Ring -- Treatment / Management. There has been evidence that doing four quadrant biopsies with jumbo forceps will obliterate a Schatzki ring as well. This allows direct visualization of the treatment since it is done during an endoscopy. The whole ring is not broken with biopsies; therefore, there is some concern that the residual tissue may lead to recurrence, a concern that is being studied further. |
article-28746_13 | Schatzki Ring -- Treatment / Management | Often patients are on some type of acid-reducing medication like a proton pump inhibitor (PPI), especially if they have mechanical obliteration of the ring with dilation or biopsy forceps. There is evidence that PPI, along with dilation, is safe and effective. The effect of PPI alone has been looked at as well in patients with average ring diameters of around 10 mm and can be followed with a barium-pill esophagram reducing the need for procedures and risks of dilation. Duration of treatment is, on average, 10 months, and the initial study only had nine participants; however, treatment is a consideration for populations of patients that are at high risk for procedures or dilations. | Schatzki Ring -- Treatment / Management. Often patients are on some type of acid-reducing medication like a proton pump inhibitor (PPI), especially if they have mechanical obliteration of the ring with dilation or biopsy forceps. There is evidence that PPI, along with dilation, is safe and effective. The effect of PPI alone has been looked at as well in patients with average ring diameters of around 10 mm and can be followed with a barium-pill esophagram reducing the need for procedures and risks of dilation. Duration of treatment is, on average, 10 months, and the initial study only had nine participants; however, treatment is a consideration for populations of patients that are at high risk for procedures or dilations. |
article-28746_14 | Schatzki Ring -- Differential Diagnosis | Differential diagnosis of Schatzki ring includes other causes of dysphagia, which can be extensive. Important differentials to keep in mind are eosinophilic esophagitis, reflux esophagitis, esophageal strictures other than Schatzki ring, extrinsic esophageal compression, motility disorders, and malignancy. If in combination with chest pain, then clinicians need to consider esophageal infections like candida esophagitis, pill esophagitis, radiation-induced esophagitis or stricture, or esophageal rupture, especially if the symptoms are acute. | Schatzki Ring -- Differential Diagnosis. Differential diagnosis of Schatzki ring includes other causes of dysphagia, which can be extensive. Important differentials to keep in mind are eosinophilic esophagitis, reflux esophagitis, esophageal strictures other than Schatzki ring, extrinsic esophageal compression, motility disorders, and malignancy. If in combination with chest pain, then clinicians need to consider esophageal infections like candida esophagitis, pill esophagitis, radiation-induced esophagitis or stricture, or esophageal rupture, especially if the symptoms are acute. |
article-28746_15 | Schatzki Ring -- Differential Diagnosis | The timing of symptoms is important if there is more progressive dysphagia of solids to eventual liquids. This is concerning for worsening obstruction, and clinicians should have a high suspicion for malignancy. With such an extensive differential, any new-onset dysphagia should be evaluated further, especially to rule out more concerning causes like malignancy. | Schatzki Ring -- Differential Diagnosis. The timing of symptoms is important if there is more progressive dysphagia of solids to eventual liquids. This is concerning for worsening obstruction, and clinicians should have a high suspicion for malignancy. With such an extensive differential, any new-onset dysphagia should be evaluated further, especially to rule out more concerning causes like malignancy. |
article-28746_16 | Schatzki Ring -- Prognosis | Schatzki ring is a benign stricture and, when symptomatic, can be effectively treated. The patient often does well, and symptoms improve after treatment. Recurrence does occur with rates up to 64% in the first 2 years, hence requiring repeat dilation. | Schatzki Ring -- Prognosis. Schatzki ring is a benign stricture and, when symptomatic, can be effectively treated. The patient often does well, and symptoms improve after treatment. Recurrence does occur with rates up to 64% in the first 2 years, hence requiring repeat dilation. |
article-28746_17 | Schatzki Ring -- Enhancing Healthcare Team Outcomes | Schatzki ring is managed by dilatation or biopsies. The condition is often managed by a gastroenterologist. However, follow-up is necessary by the nurse practitioner and primary care provider as recurrence rates are high. Most patients need repeat dilatations. | Schatzki Ring -- Enhancing Healthcare Team Outcomes. Schatzki ring is managed by dilatation or biopsies. The condition is often managed by a gastroenterologist. However, follow-up is necessary by the nurse practitioner and primary care provider as recurrence rates are high. Most patients need repeat dilatations. |
article-28746_18 | Schatzki Ring -- Review Questions | Access free multiple choice questions on this topic. Click here for a simplified version. Comment on this article. | Schatzki Ring -- Review Questions. Access free multiple choice questions on this topic. Click here for a simplified version. Comment on this article. |
article-26212_0 | Opioid Addiction (Archived) -- Introduction | Opioid use disorder and opioid addiction remain at epidemic levels in the US and worldwide. Three million US citizens and 16 million individuals worldwide have had or currently suffer from opioid use disorder (OUD). More than 500,000 in the United States are dependent on heroin. The diagnosis of OUD is made by meeting two or more of the eleven criteria in a year time period. The key elements are as follows: Increasing dose/tolerance Wish to cut down on use Excessive time spent to obtain or use the medication Strong desire to use Use interferes with obligations Continued use despite life disruption Use of opioids in physically hazardous situations Reduction or elimination of important activities due to use Continued use despite physical or psychological problems Need for increased doses of the drug Withdrawal when the dose is decreased | Opioid Addiction (Archived) -- Introduction. Opioid use disorder and opioid addiction remain at epidemic levels in the US and worldwide. Three million US citizens and 16 million individuals worldwide have had or currently suffer from opioid use disorder (OUD). More than 500,000 in the United States are dependent on heroin. The diagnosis of OUD is made by meeting two or more of the eleven criteria in a year time period. The key elements are as follows: Increasing dose/tolerance Wish to cut down on use Excessive time spent to obtain or use the medication Strong desire to use Use interferes with obligations Continued use despite life disruption Use of opioids in physically hazardous situations Reduction or elimination of important activities due to use Continued use despite physical or psychological problems Need for increased doses of the drug Withdrawal when the dose is decreased |
article-26212_1 | Opioid Addiction (Archived) -- Introduction | The increase in OUD can be partially attributed to overprescribing of opioid medications. Healthcare providers in the 1990s increased opioid prescribing in response to the "pain as fifth vital sign" campaign, downplay of the abuse potential of opioids, and aggressive marketing of drugs such as Oxycontin and Opana. Risk factors for misuse of these medications are initiation at a young age, previous history of illicit drug or alcohol abuse, family history of illicit drug or alcohol abuse, sexual abuse in females, adverse childhood experiences, and psychological comorbidities (depression, bipolar disorder, and attention deficit hyperactivity disorder) [1] | Opioid Addiction (Archived) -- Introduction. The increase in OUD can be partially attributed to overprescribing of opioid medications. Healthcare providers in the 1990s increased opioid prescribing in response to the "pain as fifth vital sign" campaign, downplay of the abuse potential of opioids, and aggressive marketing of drugs such as Oxycontin and Opana. Risk factors for misuse of these medications are initiation at a young age, previous history of illicit drug or alcohol abuse, family history of illicit drug or alcohol abuse, sexual abuse in females, adverse childhood experiences, and psychological comorbidities (depression, bipolar disorder, and attention deficit hyperactivity disorder) [1] |
article-26212_2 | Opioid Addiction (Archived) -- Etiology | Opioid addiction results from many practices and behaviors. The United States possesses an insatiable appetite for the prescription of opioid medications. In 2015, 91.8 million individuals in the United States used prescription opioids. Due to their inarguable abuse potential, these drugs are frequently misused, with high numbers of patients developing dependence. Opioid medications prescribed for mild to moderate acute pain were continued indefinitely, with no intention of tapering or ceasing use. Due to pharmacologic effects, opioids are highly addictive. Tolerance is achieved within days, and the withdrawal syndrome is severe. [2] [3] [4] | Opioid Addiction (Archived) -- Etiology. Opioid addiction results from many practices and behaviors. The United States possesses an insatiable appetite for the prescription of opioid medications. In 2015, 91.8 million individuals in the United States used prescription opioids. Due to their inarguable abuse potential, these drugs are frequently misused, with high numbers of patients developing dependence. Opioid medications prescribed for mild to moderate acute pain were continued indefinitely, with no intention of tapering or ceasing use. Due to pharmacologic effects, opioids are highly addictive. Tolerance is achieved within days, and the withdrawal syndrome is severe. [2] [3] [4] |
article-26212_3 | Opioid Addiction (Archived) -- Epidemiology | Opioid addiction afflicts individuals from all socioeconomic and educational backgrounds. Four million people admit to the nonmedical use of prescription opioids. Perhaps more concerning, 400,000 people had used heroin in the past month based on data from 2015 through 2016. Roughly 80% of new heroin users in the United States report pills as their initiation to opioid use and subsequent OUD. From 2002 through 2011, approximately 25 million people in the United States began nonmedical use of pain relievers. More than 11 million misused the medications. Emergency department visits due to complications and overdose have increased annually since 2010. Rates of ED visits involving opioids more than tripled from 1999 through 2013. In 2017, opioid overdose was declared a national emergency in the United States. [5] [6] | Opioid Addiction (Archived) -- Epidemiology. Opioid addiction afflicts individuals from all socioeconomic and educational backgrounds. Four million people admit to the nonmedical use of prescription opioids. Perhaps more concerning, 400,000 people had used heroin in the past month based on data from 2015 through 2016. Roughly 80% of new heroin users in the United States report pills as their initiation to opioid use and subsequent OUD. From 2002 through 2011, approximately 25 million people in the United States began nonmedical use of pain relievers. More than 11 million misused the medications. Emergency department visits due to complications and overdose have increased annually since 2010. Rates of ED visits involving opioids more than tripled from 1999 through 2013. In 2017, opioid overdose was declared a national emergency in the United States. [5] [6] |
article-26212_4 | Opioid Addiction (Archived) -- Pathophysiology | Opioids bind to receptors in the central and peripheral nervous systems (primarily delta, kappa, and mu), with treatment effects for pain, cough, and diarrhea. Action on these same receptors induces intense euphoria. This causes many individuals to continue using with the intention of recreating that first high. Most people who misuse opioids do so for pain relief or to prevent withdrawal symptoms. Increasing evidence is dispelling the myth that opioids are effective long-term analgesic medications. Below are receptors matched to physiologic effects in the central nervous system (nociceptin and zeta receptors are increasingly researched): | Opioid Addiction (Archived) -- Pathophysiology. Opioids bind to receptors in the central and peripheral nervous systems (primarily delta, kappa, and mu), with treatment effects for pain, cough, and diarrhea. Action on these same receptors induces intense euphoria. This causes many individuals to continue using with the intention of recreating that first high. Most people who misuse opioids do so for pain relief or to prevent withdrawal symptoms. Increasing evidence is dispelling the myth that opioids are effective long-term analgesic medications. Below are receptors matched to physiologic effects in the central nervous system (nociceptin and zeta receptors are increasingly researched): |
article-26212_5 | Opioid Addiction (Archived) -- Pathophysiology | Delta: analgesia, antidepressant, convulsant, physical dependence, modulate mu-related respiratory depression Kappa: analgesia, anticonvulsant, depression, hallucination, diuresis, dysphoria, miosis, neuroprotection, sedation Mu: analgesia, physical dependence, respiratory depression, miosis, euphoria, reduced GI motility, vasodilation. Peripheral mu receptors are tissue-specific with higher concentrations in bronchial smooth muscle and the digestive tract. This is the reason for opioids suppressing the cough reflex and causing constipation. [7] | Opioid Addiction (Archived) -- Pathophysiology. Delta: analgesia, antidepressant, convulsant, physical dependence, modulate mu-related respiratory depression Kappa: analgesia, anticonvulsant, depression, hallucination, diuresis, dysphoria, miosis, neuroprotection, sedation Mu: analgesia, physical dependence, respiratory depression, miosis, euphoria, reduced GI motility, vasodilation. Peripheral mu receptors are tissue-specific with higher concentrations in bronchial smooth muscle and the digestive tract. This is the reason for opioids suppressing the cough reflex and causing constipation. [7] |
article-26212_6 | Opioid Addiction (Archived) -- Pathophysiology | Withdrawal symptoms manifest when opioids are discontinued abruptly, though can occur with tapered cessation of medications. Withdrawal symptoms present in acute, subacute, and chronic phases. Most healthcare providers are aware of the acute withdrawal symptoms: hot/cold flashes, nausea, vomiting, diarrhea, sweating, lacrimation, insomnia, anxiety, generalized muscle pain, tachycardia, piloerection, and dehydration. However many providers do not have experience with the prolonged subacute chronic phases. | Opioid Addiction (Archived) -- Pathophysiology. Withdrawal symptoms manifest when opioids are discontinued abruptly, though can occur with tapered cessation of medications. Withdrawal symptoms present in acute, subacute, and chronic phases. Most healthcare providers are aware of the acute withdrawal symptoms: hot/cold flashes, nausea, vomiting, diarrhea, sweating, lacrimation, insomnia, anxiety, generalized muscle pain, tachycardia, piloerection, and dehydration. However many providers do not have experience with the prolonged subacute chronic phases. |
article-26212_7 | Opioid Addiction (Archived) -- Histopathology | Chronic opioid use causes alterations in receptor sensitivity, leading to medication tolerance and changes in pain perception. Opioid-induced hyperalgesia (OIH) causes pain perception out of proportion to the stimulus (hyperalgesia) in those who use or misuse opioids long-term. | Opioid Addiction (Archived) -- Histopathology. Chronic opioid use causes alterations in receptor sensitivity, leading to medication tolerance and changes in pain perception. Opioid-induced hyperalgesia (OIH) causes pain perception out of proportion to the stimulus (hyperalgesia) in those who use or misuse opioids long-term. |
article-26212_8 | Opioid Addiction (Archived) -- Toxicokinetics | The toxicokinetics of opioid drugs varies within the class. Half-lives range from minutes (heroin) to many hours (methadone). Potencies of opioids also vary drastically, with more potent synthetic drugs such as fentanyl, carfentanil, and newer compounds causing overdose deaths and necessitating large doses of naloxone for reversal. Opioids tend to be lipophilic and metabolized in the liver by both phase 1 (modification) and phase 2 (conjugation) reactions. | Opioid Addiction (Archived) -- Toxicokinetics. The toxicokinetics of opioid drugs varies within the class. Half-lives range from minutes (heroin) to many hours (methadone). Potencies of opioids also vary drastically, with more potent synthetic drugs such as fentanyl, carfentanil, and newer compounds causing overdose deaths and necessitating large doses of naloxone for reversal. Opioids tend to be lipophilic and metabolized in the liver by both phase 1 (modification) and phase 2 (conjugation) reactions. |
article-26212_9 | Opioid Addiction (Archived) -- History and Physical | History and physical examination in patients with OUD vary depending on duration and intensity of use. Patients who sporadically misuse small doses of opioids may have a completely normal physical exam and no clear historical findings. Patients with chronic oral opioid use may have sedation if actively using the drug, along with miosis and hyperactive response to pain. Patients who are dependent on intravenous heroin may have the many effects of injection drug abuse: Bacteremia Endocarditis Track marks and scarring in common sites of injection Skin-popping scars Poor dentition Lack of IV access sites Abscess or cellulitis Stigmata of hepatitis Cirrhosis, and many other findings. | Opioid Addiction (Archived) -- History and Physical. History and physical examination in patients with OUD vary depending on duration and intensity of use. Patients who sporadically misuse small doses of opioids may have a completely normal physical exam and no clear historical findings. Patients with chronic oral opioid use may have sedation if actively using the drug, along with miosis and hyperactive response to pain. Patients who are dependent on intravenous heroin may have the many effects of injection drug abuse: Bacteremia Endocarditis Track marks and scarring in common sites of injection Skin-popping scars Poor dentition Lack of IV access sites Abscess or cellulitis Stigmata of hepatitis Cirrhosis, and many other findings. |
article-26212_10 | Opioid Addiction (Archived) -- History and Physical | History may be limited as patients are often not forthcoming when discussing substance abuse patterns. However, it is crucial to obtain detailed history in patients in whom OUD or its sequelae are suspected. | Opioid Addiction (Archived) -- History and Physical. History may be limited as patients are often not forthcoming when discussing substance abuse patterns. However, it is crucial to obtain detailed history in patients in whom OUD or its sequelae are suspected. |
article-26212_11 | Opioid Addiction (Archived) -- Evaluation | Providers who suspect OUD should begin with a detailed history and physical exam. Patients may initially withhold information. Others may be overtly dishonest and manipulative. | Opioid Addiction (Archived) -- Evaluation. Providers who suspect OUD should begin with a detailed history and physical exam. Patients may initially withhold information. Others may be overtly dishonest and manipulative. |
article-26212_12 | Opioid Addiction (Archived) -- Evaluation | As mentioned above, these patients are at risk for secondary effects of drug abuse. Patients dependent on heroin frequently have infectious complications. Therefore, many patients should have laboratory studies ordered and selected imaging depending on presenting symptoms. [8] [9] | Opioid Addiction (Archived) -- Evaluation. As mentioned above, these patients are at risk for secondary effects of drug abuse. Patients dependent on heroin frequently have infectious complications. Therefore, many patients should have laboratory studies ordered and selected imaging depending on presenting symptoms. [8] [9] |
article-26212_13 | Opioid Addiction (Archived) -- Treatment / Management | Practitioners should offer patients who have OUD inpatient or outpatient substance use disorder (SUD) treatment. The short-term use of new opioid prescriptions does not provide long-term benefits. Regulations limiting the prescription of opioids are increasingly incorporated into state laws in the US. | Opioid Addiction (Archived) -- Treatment / Management. Practitioners should offer patients who have OUD inpatient or outpatient substance use disorder (SUD) treatment. The short-term use of new opioid prescriptions does not provide long-term benefits. Regulations limiting the prescription of opioids are increasingly incorporated into state laws in the US. |
article-26212_14 | Opioid Addiction (Archived) -- Treatment / Management | Patients presenting with opioid withdrawal often require antiemetic/antidiarrheal therapy and IV hydration. Medications for OUD (MOUD), such as buprenorphine (a partial mu agonist and kappa antagonist), can be initiated for effective therapy in a medically supervised opioid withdrawal. Buprenorphine should be started in patients with mild-to-moderate withdrawal (Clinical Opioid Withdrawal Scale [COWS] of greater than 10 or 12) symptoms. Methadone, which is a full agonist mu receptor, can also control opioid withdrawal symptoms and complete opioid detoxification. [10] | Opioid Addiction (Archived) -- Treatment / Management. Patients presenting with opioid withdrawal often require antiemetic/antidiarrheal therapy and IV hydration. Medications for OUD (MOUD), such as buprenorphine (a partial mu agonist and kappa antagonist), can be initiated for effective therapy in a medically supervised opioid withdrawal. Buprenorphine should be started in patients with mild-to-moderate withdrawal (Clinical Opioid Withdrawal Scale [COWS] of greater than 10 or 12) symptoms. Methadone, which is a full agonist mu receptor, can also control opioid withdrawal symptoms and complete opioid detoxification. [10] |
article-26212_15 | Opioid Addiction (Archived) -- Treatment / Management | Opioid overdose should be promptly treated with naloxone to reverse the effects of the drug, particularly respiratory depression. Adequate intravenous access allows IV fluid administration and repeat naloxone dosing when indicated. Begin with an intravenous dose of 0.4 to 0.8 mg to reverse neurologic and cardiorespiratory symptoms [11] . Patients who have taken large doses of very potent opioids may require larger doses. Naloxone can also be administered intranasally and intramuscularly. | Opioid Addiction (Archived) -- Treatment / Management. Opioid overdose should be promptly treated with naloxone to reverse the effects of the drug, particularly respiratory depression. Adequate intravenous access allows IV fluid administration and repeat naloxone dosing when indicated. Begin with an intravenous dose of 0.4 to 0.8 mg to reverse neurologic and cardiorespiratory symptoms [11] . Patients who have taken large doses of very potent opioids may require larger doses. Naloxone can also be administered intranasally and intramuscularly. |
article-26212_16 | Opioid Addiction (Archived) -- Treatment / Management | Medications have shown promising results in the treatment of OUD. Nabumetone, buprenorphine, methadone, and naltrexone are used in various combinations to decrease abuse of both oral opioids and heroin. All patients at risk for overdose should have or receive naloxone kits for home use. [12] [13] [14] | Opioid Addiction (Archived) -- Treatment / Management. Medications have shown promising results in the treatment of OUD. Nabumetone, buprenorphine, methadone, and naltrexone are used in various combinations to decrease abuse of both oral opioids and heroin. All patients at risk for overdose should have or receive naloxone kits for home use. [12] [13] [14] |
article-26212_17 | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act | The Mainstreaming Addiction Treatment (MAT) Act provision updates federal guidelines to expand the availability of evidence-based treatment to address the opioid epidemic. The MAT Act empowers all health care providers with a standard controlled substance license to prescribe buprenorphine for opioid use disorder (OUD), just as they prescribe other essential medications. The MAT Act is intended to help destigmatize a standard of care for OUD and will integrate substance use disorder treatment across healthcare settings. | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act. The Mainstreaming Addiction Treatment (MAT) Act provision updates federal guidelines to expand the availability of evidence-based treatment to address the opioid epidemic. The MAT Act empowers all health care providers with a standard controlled substance license to prescribe buprenorphine for opioid use disorder (OUD), just as they prescribe other essential medications. The MAT Act is intended to help destigmatize a standard of care for OUD and will integrate substance use disorder treatment across healthcare settings. |
article-26212_18 | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act | As of December 2022, the MAT Act has eliminated the DATA-Waiver (X-Waiver) program. All DEA-registered practitioners with Schedule III authority may now prescribe buprenorphine for OUD in their practice if permitted by applicable state law, and SAMHSA encourages them to do so. Prescribers who were registered as DATA-Waiver prescribers will receive a new DEA registration certificate reflecting this change; no action is needed on the part of registrants. | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act. As of December 2022, the MAT Act has eliminated the DATA-Waiver (X-Waiver) program. All DEA-registered practitioners with Schedule III authority may now prescribe buprenorphine for OUD in their practice if permitted by applicable state law, and SAMHSA encourages them to do so. Prescribers who were registered as DATA-Waiver prescribers will receive a new DEA registration certificate reflecting this change; no action is needed on the part of registrants. |
article-26212_19 | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act | There are no longer any limits on the number of patients with OUD that a practitioner may treat with buprenorphine. Separate tracking of patients treated with buprenorphine or prescriptions written is no longer required. | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act. There are no longer any limits on the number of patients with OUD that a practitioner may treat with buprenorphine. Separate tracking of patients treated with buprenorphine or prescriptions written is no longer required. |
article-26212_20 | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act | Pharmacy staff can now fill buprenorphine prescriptions using the prescribing authority's DEA number and does not need a DATA 2000 waiver from the prescriber. However, depending on the pharmacy, the dispensing software may still require the X-Waiver information in order to proceed. Practitioners are still required to comply with any applicable state limits regarding the treatment of patients with OUD. Contact information for State Opioid Treatment Authorities can be found here: https://www.samhsa.gov/medicationassisted-treatment/sota. | Opioid Addiction (Archived) -- Treatment / Management -- Mainstreaming Addiction Treatment (MAT) Act. Pharmacy staff can now fill buprenorphine prescriptions using the prescribing authority's DEA number and does not need a DATA 2000 waiver from the prescriber. However, depending on the pharmacy, the dispensing software may still require the X-Waiver information in order to proceed. Practitioners are still required to comply with any applicable state limits regarding the treatment of patients with OUD. Contact information for State Opioid Treatment Authorities can be found here: https://www.samhsa.gov/medicationassisted-treatment/sota. |
article-26212_21 | Opioid Addiction (Archived) -- Differential Diagnosis | Acute pancreatitis Bacterial gastroenteritis Barbiturate toxicity Benzodiazepine toxicity Chronic pancreatitis Influenza Peptic ulcer disease Viral gastroenteritis | Opioid Addiction (Archived) -- Differential Diagnosis. Acute pancreatitis Bacterial gastroenteritis Barbiturate toxicity Benzodiazepine toxicity Chronic pancreatitis Influenza Peptic ulcer disease Viral gastroenteritis |
article-26212_22 | Opioid Addiction (Archived) -- Complications | Patients who abuse heroin have higher rates of motor vehicle accidents than people who are not abusing heroin [15] No data has proven significant driving performance changes in patients on medication-assisted treatment (MAT) [16] . | Opioid Addiction (Archived) -- Complications. Patients who abuse heroin have higher rates of motor vehicle accidents than people who are not abusing heroin [15] No data has proven significant driving performance changes in patients on medication-assisted treatment (MAT) [16] . |
article-26212_23 | Opioid Addiction (Archived) -- Pearls and Other Issues | OUD has reached epidemic proportions both in the US and worldwide. Forty-nine US states have enacted prescription drug monitoring programs. | Opioid Addiction (Archived) -- Pearls and Other Issues. OUD has reached epidemic proportions both in the US and worldwide. Forty-nine US states have enacted prescription drug monitoring programs. |
article-26212_24 | Opioid Addiction (Archived) -- Pearls and Other Issues | Other preventive treatments include good samaritan laws and naloxone distribution for overdose death prevention, harsher penalties for drug dealers, disincentives to the prescription of opioids, needle exchanges to curtail infectious complications, and increased state and federal funding for rehabilitation and recovery. | Opioid Addiction (Archived) -- Pearls and Other Issues. Other preventive treatments include good samaritan laws and naloxone distribution for overdose death prevention, harsher penalties for drug dealers, disincentives to the prescription of opioids, needle exchanges to curtail infectious complications, and increased state and federal funding for rehabilitation and recovery. |
article-26212_25 | Opioid Addiction (Archived) -- Enhancing Healthcare Team Outcomes | Opioids, also called narcotics, are highly addictive pain medications. While they are strong pain relievers, they have high addiction potential. It behooves clinicians to prescribe opioids only for severe pain and discontinue the medication as soon as feasible. | Opioid Addiction (Archived) -- Enhancing Healthcare Team Outcomes. Opioids, also called narcotics, are highly addictive pain medications. While they are strong pain relievers, they have high addiction potential. It behooves clinicians to prescribe opioids only for severe pain and discontinue the medication as soon as feasible. |
article-26212_26 | Opioid Addiction (Archived) -- Review Questions | Access free multiple choice questions on this topic. Comment on this article. | Opioid Addiction (Archived) -- Review Questions. Access free multiple choice questions on this topic. Comment on this article. |
article-17705_0 | Antiphospholipid Syndrome -- Continuing Education Activity | Antiphospholipid syndrome is characterized by the presence of antiphospholipid antibodies in the setting of thrombosis or pregnancy loss or complications. These antibodies are autoantibodies directed against phospholipid-binding proteins and are composed of 3 main categories. Despite in vivo prolongation, these antibodies cause in vivo thrombosis in multiple organ systems. The most common sites of venous and arterial thrombosis are the lower limbs and cerebral arterial circulation, respectively. However, thrombosis can occur in any organ. Catastrophic antiphospholipid syndrome is a dreaded complication with high mortality. Treatment is variable depending on clinical presentation and antibody positivity. This activity reviews the criteria for considering antiphospholipid syndrome in the differential diagnosis and outlines proper evaluation protocols, highlighting the role of the interprofessional team in caring for patients with this condition. | Antiphospholipid Syndrome -- Continuing Education Activity. Antiphospholipid syndrome is characterized by the presence of antiphospholipid antibodies in the setting of thrombosis or pregnancy loss or complications. These antibodies are autoantibodies directed against phospholipid-binding proteins and are composed of 3 main categories. Despite in vivo prolongation, these antibodies cause in vivo thrombosis in multiple organ systems. The most common sites of venous and arterial thrombosis are the lower limbs and cerebral arterial circulation, respectively. However, thrombosis can occur in any organ. Catastrophic antiphospholipid syndrome is a dreaded complication with high mortality. Treatment is variable depending on clinical presentation and antibody positivity. This activity reviews the criteria for considering antiphospholipid syndrome in the differential diagnosis and outlines proper evaluation protocols, highlighting the role of the interprofessional team in caring for patients with this condition. |
article-17705_1 | Antiphospholipid Syndrome -- Continuing Education Activity | Objectives: Identify the signs and symptoms of a patient with antiphospholipid syndrome. Apply best practices in the evaluation of antiphospholipid syndrome. Implement evidence-based treatment and management strategies for antiphospholipid syndrome depending on the clinical picture and results of laboratory testing. Collaborate with interprofessional healthcare teams to provide comprehensive care for patients with antiphospholipid syndrome. Access free multiple choice questions on this topic. | Antiphospholipid Syndrome -- Continuing Education Activity. Objectives: Identify the signs and symptoms of a patient with antiphospholipid syndrome. Apply best practices in the evaluation of antiphospholipid syndrome. Implement evidence-based treatment and management strategies for antiphospholipid syndrome depending on the clinical picture and results of laboratory testing. Collaborate with interprofessional healthcare teams to provide comprehensive care for patients with antiphospholipid syndrome. Access free multiple choice questions on this topic. |
article-17705_2 | Antiphospholipid Syndrome -- Introduction | Antiphospholipid antibodies (APLAs) are autoantibodies that target phospholipid-binding proteins. Antiphospholipid syndrome (APS) is a multisystemic autoimmune disorder. [1] The hallmark of APS comprises the persistent presence of APLAs in the setting of arterial and venous thrombus or pregnancy loss. [2] | Antiphospholipid Syndrome -- Introduction. Antiphospholipid antibodies (APLAs) are autoantibodies that target phospholipid-binding proteins. Antiphospholipid syndrome (APS) is a multisystemic autoimmune disorder. [1] The hallmark of APS comprises the persistent presence of APLAs in the setting of arterial and venous thrombus or pregnancy loss. [2] |
article-17705_3 | Antiphospholipid Syndrome -- Introduction | The most common sites for venous and arterial thrombosis are the lower limbs and cerebral arterial circulation, respectively. However, thrombosis can occur in any organ. Laboratory tests, including enzyme-linked immunosorbent assay (ELISA) and functional assays, are used to identify APS. The 3 known APLAs include: Anticardiolipin antibodies IgG or IgM (ELISA) Anti-beta-2-glycoprotein-I (anti-β2GPI) antibodies IgG or IgM (ELISA) Lupus anticoagulants (functional clotting assays) | Antiphospholipid Syndrome -- Introduction. The most common sites for venous and arterial thrombosis are the lower limbs and cerebral arterial circulation, respectively. However, thrombosis can occur in any organ. Laboratory tests, including enzyme-linked immunosorbent assay (ELISA) and functional assays, are used to identify APS. The 3 known APLAs include: Anticardiolipin antibodies IgG or IgM (ELISA) Anti-beta-2-glycoprotein-I (anti-β2GPI) antibodies IgG or IgM (ELISA) Lupus anticoagulants (functional clotting assays) |
article-17705_4 | Antiphospholipid Syndrome -- Etiology | APS can be primary when there is no evidence of autoimmune disease or secondary to autoimmune processes, such as systemic lupus erythematosus (SLE), in 40% of cases. [3] A study found positive APLAs in 6% of all pregnant patients, 13.5% of stroke patients, and 9.5% of patients with deep venous thromboses (DVTs). [4] | Antiphospholipid Syndrome -- Etiology. APS can be primary when there is no evidence of autoimmune disease or secondary to autoimmune processes, such as systemic lupus erythematosus (SLE), in 40% of cases. [3] A study found positive APLAs in 6% of all pregnant patients, 13.5% of stroke patients, and 9.5% of patients with deep venous thromboses (DVTs). [4] |
article-17705_5 | Antiphospholipid Syndrome -- Etiology | Genetic risk factors, such as coagulation factor mutations, increase the risk of antiphospholipid antibody–associated thrombosis. HLA-DR7, DR4, DRw53, DQw7, and C4 null alleles have been reported to be associated with APS. Infections, particularly viral, are associated with elevated APLA levels compared to bacterial infections. Some of these include B orrelia burgdorferi , Coxiella burnetii , T reponema , hepatitis C, HIV, COVID-19, Epstein-Barr virus (EBV), and Leptospira have been implicated in APLA formation. In fact, a large meta-analysis found that almost 50% of patients diagnosed with COVID-19 had positive APS, most commonly lupus anticoagulant. However, this analysis found no increased thrombotic risk in APLA-positive COVID-19 patients. [4] [5] | Antiphospholipid Syndrome -- Etiology. Genetic risk factors, such as coagulation factor mutations, increase the risk of antiphospholipid antibody–associated thrombosis. HLA-DR7, DR4, DRw53, DQw7, and C4 null alleles have been reported to be associated with APS. Infections, particularly viral, are associated with elevated APLA levels compared to bacterial infections. Some of these include B orrelia burgdorferi , Coxiella burnetii , T reponema , hepatitis C, HIV, COVID-19, Epstein-Barr virus (EBV), and Leptospira have been implicated in APLA formation. In fact, a large meta-analysis found that almost 50% of patients diagnosed with COVID-19 had positive APS, most commonly lupus anticoagulant. However, this analysis found no increased thrombotic risk in APLA-positive COVID-19 patients. [4] [5] |
article-17705_6 | Antiphospholipid Syndrome -- Etiology | Several drugs, including chlorpromazine, procainamide, quinidine, and phenytoin, can induce APLA production. Low levels of APLAs may also be normally present and may be transient, leading to the requirement of positive antibodies at least 12 weeks apart for diagnosis. [4] APS can be further classified based on clinical manifestations, such as obstetric, thrombotic, or both, and whether it involves life-threatening multiorgan involvement. Thrombotic APS: Patients are diagnosed with APS based on arterial or venous thrombosis and persistent laboratory criteria for APLA. The most common presentation is a DVT. [6] | Antiphospholipid Syndrome -- Etiology. Several drugs, including chlorpromazine, procainamide, quinidine, and phenytoin, can induce APLA production. Low levels of APLAs may also be normally present and may be transient, leading to the requirement of positive antibodies at least 12 weeks apart for diagnosis. [4] APS can be further classified based on clinical manifestations, such as obstetric, thrombotic, or both, and whether it involves life-threatening multiorgan involvement. Thrombotic APS: Patients are diagnosed with APS based on arterial or venous thrombosis and persistent laboratory criteria for APLA. The most common presentation is a DVT. [6] |
article-17705_7 | Antiphospholipid Syndrome -- Etiology | Obstetric APS: Patients are diagnosed based on APS-defining pregnancy morbidity, such as including premature birth due to severe preeclampsia, fetal death after 10 weeks of gestation, placental insufficiency, or multiple embryonic losses before 10 weeks of gestation, and persistent laboratory criteria for APLA. Patients with both thromboembolic complications and APS-defining pregnancy morbidity are recognized as having both thrombotic and obstetric APS. Catastrophic APS: This rare and life-threatening form of APS is defined as thrombotic complications affecting multiple organs, both microvascular and macrovascular. See below for further details. [7] | Antiphospholipid Syndrome -- Etiology. Obstetric APS: Patients are diagnosed based on APS-defining pregnancy morbidity, such as including premature birth due to severe preeclampsia, fetal death after 10 weeks of gestation, placental insufficiency, or multiple embryonic losses before 10 weeks of gestation, and persistent laboratory criteria for APLA. Patients with both thromboembolic complications and APS-defining pregnancy morbidity are recognized as having both thrombotic and obstetric APS. Catastrophic APS: This rare and life-threatening form of APS is defined as thrombotic complications affecting multiple organs, both microvascular and macrovascular. See below for further details. [7] |
article-17705_8 | Antiphospholipid Syndrome -- Epidemiology | The incidence of APS is believed to be around 2.1 in 100,000 individuals in the United States, with a prevalence of 50 per 100,000. In Europe, rates are lower, with an incidence of 1.1 per 100,000. Rates are also believed to be lower in Asia; South Korea has an incidence of 0.75 per 100,000, with a prevalence of 6.19 per 100,000. [4] | Antiphospholipid Syndrome -- Epidemiology. The incidence of APS is believed to be around 2.1 in 100,000 individuals in the United States, with a prevalence of 50 per 100,000. In Europe, rates are lower, with an incidence of 1.1 per 100,000. Rates are also believed to be lower in Asia; South Korea has an incidence of 0.75 per 100,000, with a prevalence of 6.19 per 100,000. [4] |
article-17705_9 | Antiphospholipid Syndrome -- Epidemiology | Low-titer anticardiolipin antibodies can be observed in up to 10% of healthy individuals, and the prevalence of a positive APLA test increases with age. In fact, a study involving centenarians without known autoimmune disease showed that 54% were positive for anti-β2GPI-IgG and 21% were positive for anticardiolipin-IgG. None were positive for the lupus anticoagulant test, possibly making this a more specific marker. [6] However, high titers and persistent positivity are rare among healthy individuals, occurring in less than 1%. Patients with SLE are at a high risk of having a positive APLA test and an APLA-related clinical outcome, such as thrombosis or pregnancy-related morbidity. About 50% to 70% of the patients with SLE with positive APLA progress to APS. [3] [8] | Antiphospholipid Syndrome -- Epidemiology. Low-titer anticardiolipin antibodies can be observed in up to 10% of healthy individuals, and the prevalence of a positive APLA test increases with age. In fact, a study involving centenarians without known autoimmune disease showed that 54% were positive for anti-β2GPI-IgG and 21% were positive for anticardiolipin-IgG. None were positive for the lupus anticoagulant test, possibly making this a more specific marker. [6] However, high titers and persistent positivity are rare among healthy individuals, occurring in less than 1%. Patients with SLE are at a high risk of having a positive APLA test and an APLA-related clinical outcome, such as thrombosis or pregnancy-related morbidity. About 50% to 70% of the patients with SLE with positive APLA progress to APS. [3] [8] |
article-17705_10 | Antiphospholipid Syndrome -- Epidemiology | APLA positivity has also been demonstrated in up to 20% of patients with rheumatoid arthritis. [9] A study involving 197 couples with a history of frequent abortions found that 20% of them tested positive for APLA. [10] Another study identified the presence of APLA, such as lupus anticoagulant or anticardiolipin antibodies, in 14% of patients with recurrent venous thromboembolism. [11] | Antiphospholipid Syndrome -- Epidemiology. APLA positivity has also been demonstrated in up to 20% of patients with rheumatoid arthritis. [9] A study involving 197 couples with a history of frequent abortions found that 20% of them tested positive for APLA. [10] Another study identified the presence of APLA, such as lupus anticoagulant or anticardiolipin antibodies, in 14% of patients with recurrent venous thromboembolism. [11] |
article-17705_11 | Antiphospholipid Syndrome -- Pathophysiology | Although not all patients with APLAs develop APS, a strong association exists between the presence of APLAs and venous thrombosis, myocardial infarction, and ischemic stroke. [12] The antibody profile, including type, titer, and underlying comorbidities, may determine the likelihood of developing clinical APS. Triple positivity with positive lupus anticoagulant and high titers of anticardiolipin and anti-β2GPI antibodies pose a high risk of APS development. In contrast, isolated or intermittent positivity or low titers of anticardiolipin or anti-β2GPI antibodies pose a low risk. [13] [14] Patients with SLE, coexisting cardiovascular risk factors, a history of recurrent thrombotic events despite anticoagulation therapy, and a history of arterial thrombosis are also at a high risk of recurrent thrombosis. APLAs are considered pathogenic as they play an important role in thrombosis and are not just a serological marker of APS (see Image. Antiphospholipid Syndrome). | Antiphospholipid Syndrome -- Pathophysiology. Although not all patients with APLAs develop APS, a strong association exists between the presence of APLAs and venous thrombosis, myocardial infarction, and ischemic stroke. [12] The antibody profile, including type, titer, and underlying comorbidities, may determine the likelihood of developing clinical APS. Triple positivity with positive lupus anticoagulant and high titers of anticardiolipin and anti-β2GPI antibodies pose a high risk of APS development. In contrast, isolated or intermittent positivity or low titers of anticardiolipin or anti-β2GPI antibodies pose a low risk. [13] [14] Patients with SLE, coexisting cardiovascular risk factors, a history of recurrent thrombotic events despite anticoagulation therapy, and a history of arterial thrombosis are also at a high risk of recurrent thrombosis. APLAs are considered pathogenic as they play an important role in thrombosis and are not just a serological marker of APS (see Image. Antiphospholipid Syndrome). |
article-17705_12 | Antiphospholipid Syndrome -- Pathophysiology | A 2-hit thrombosis model is proposed to elucidate thrombus formation in patients with APS. The first hit involves endothelial injury, while the second hit amplifies thrombus formation. Beta-2-glycoprotein-I does not bind unstimulated endothelium in vivo. One hypothesis suggests that when the causes of endothelial injury are unidentified, there may be a disturbance in the redox balance within vascular beds, potentially priming the endothelium. Patients with APS have lower levels of the reduced, protective, and non-immunogenic beta-2 glycoprotein-I. Annexin A2, an endothelial cell surface receptor, is upregulated with oxidative stress. Smoking can lead to endothelial injury and increase pro-thrombotic susceptibilities in patients with lupus anticoagulants. | Antiphospholipid Syndrome -- Pathophysiology. A 2-hit thrombosis model is proposed to elucidate thrombus formation in patients with APS. The first hit involves endothelial injury, while the second hit amplifies thrombus formation. Beta-2-glycoprotein-I does not bind unstimulated endothelium in vivo. One hypothesis suggests that when the causes of endothelial injury are unidentified, there may be a disturbance in the redox balance within vascular beds, potentially priming the endothelium. Patients with APS have lower levels of the reduced, protective, and non-immunogenic beta-2 glycoprotein-I. Annexin A2, an endothelial cell surface receptor, is upregulated with oxidative stress. Smoking can lead to endothelial injury and increase pro-thrombotic susceptibilities in patients with lupus anticoagulants. |
article-17705_13 | Antiphospholipid Syndrome -- Pathophysiology | Plasma nitrite levels are decreased in patients with APS compared to healthy controls. The reduced expression and activity of endothelial nitric oxide synthase result in the generation of peroxynitrite and superoxide. Preclinical models have shown how the domain I of beta-2 glycoprotein-I autoantibodies antagonizes the activity of endothelial nitric oxide synthase with resultant monocyte adhesion and inhibition of nitric oxide–dependent arterial relaxation. | Antiphospholipid Syndrome -- Pathophysiology. Plasma nitrite levels are decreased in patients with APS compared to healthy controls. The reduced expression and activity of endothelial nitric oxide synthase result in the generation of peroxynitrite and superoxide. Preclinical models have shown how the domain I of beta-2 glycoprotein-I autoantibodies antagonizes the activity of endothelial nitric oxide synthase with resultant monocyte adhesion and inhibition of nitric oxide–dependent arterial relaxation. |
article-17705_14 | Antiphospholipid Syndrome -- Pathophysiology | APLAs upregulate tissue factor expression through some intracellular signaling pathways after binding the anti-β2GPI autoantibodies on the surface of monocytes and multiprotein complexes of endothelial cells. Autoantibodies from patients with APS disrupt the mitochondrial function of neutrophils and monocytes and increase the production of reactive oxygen species, resulting in the subsequent expression of tissue factors. [8] Complement activation and inhibition of fibrinolysis by APLAs have been established. | Antiphospholipid Syndrome -- Pathophysiology. APLAs upregulate tissue factor expression through some intracellular signaling pathways after binding the anti-β2GPI autoantibodies on the surface of monocytes and multiprotein complexes of endothelial cells. Autoantibodies from patients with APS disrupt the mitochondrial function of neutrophils and monocytes and increase the production of reactive oxygen species, resulting in the subsequent expression of tissue factors. [8] Complement activation and inhibition of fibrinolysis by APLAs have been established. |
article-17705_15 | Antiphospholipid Syndrome -- Pathophysiology | Intraplacental thrombosis, complement pathway activation, interference with trophoblast growth and differentiation, impaired trophoblastic invasion, and effects on hormone production play a role in APS-associated pregnancy loss. In a study involving almost 600 pregnant women with fetal loss after 20 weeks, 9.6% were positive for 1 or more APLA. [6] | Antiphospholipid Syndrome -- Pathophysiology. Intraplacental thrombosis, complement pathway activation, interference with trophoblast growth and differentiation, impaired trophoblastic invasion, and effects on hormone production play a role in APS-associated pregnancy loss. In a study involving almost 600 pregnant women with fetal loss after 20 weeks, 9.6% were positive for 1 or more APLA. [6] |
article-17705_16 | Antiphospholipid Syndrome -- Histopathology | Kidney biopsy of patients with APS having renal involvement demonstrates thrombotic microangiopathy, including the following findings—fibrin thrombi in glomeruli or arterioles without inflammatory cells or immune complexes, fibrous intimal hyperplasia, and focal cortical atrophy. Thyroidization may be present, and these lesions should be evaluated separately from lesions consistent with lupus nephritis. [15] | Antiphospholipid Syndrome -- Histopathology. Kidney biopsy of patients with APS having renal involvement demonstrates thrombotic microangiopathy, including the following findings—fibrin thrombi in glomeruli or arterioles without inflammatory cells or immune complexes, fibrous intimal hyperplasia, and focal cortical atrophy. Thyroidization may be present, and these lesions should be evaluated separately from lesions consistent with lupus nephritis. [15] |
article-17705_17 | Antiphospholipid Syndrome -- Histopathology | Skin biopsy from sites of nonhealing ulcerations is typically nonspecific and not always performed but may show small vessel and endothelial proliferation without significant vasculitis. A cardiac biopsy may also reveal small vessel thrombosis if performed. Bronchiolar lavage may show hemosiderin-laden macrophages, and lung biopsy may show capillaritis or microthrombi. [15] | Antiphospholipid Syndrome -- Histopathology. Skin biopsy from sites of nonhealing ulcerations is typically nonspecific and not always performed but may show small vessel and endothelial proliferation without significant vasculitis. A cardiac biopsy may also reveal small vessel thrombosis if performed. Bronchiolar lavage may show hemosiderin-laden macrophages, and lung biopsy may show capillaritis or microthrombi. [15] |
article-17705_18 | Antiphospholipid Syndrome -- History and Physical | The clinical features vary significantly and can be as mild as asymptomatic APLA positivity or as severe as catastrophic APS. Arterial and venous thrombosis and pregnancy-related complications are the hallmarks of the disease. However, several other organ systems may also be involved (noncriteria manifestations). | Antiphospholipid Syndrome -- History and Physical. The clinical features vary significantly and can be as mild as asymptomatic APLA positivity or as severe as catastrophic APS. Arterial and venous thrombosis and pregnancy-related complications are the hallmarks of the disease. However, several other organ systems may also be involved (noncriteria manifestations). |
article-17705_19 | Antiphospholipid Syndrome -- History and Physical -- Vascular Thrombosis | APS can lead to arterial or venous thrombosis involving any organ system. These clots can be isolated or recurrent and involve blood vessels not commonly associated with other causes of thrombosis, such as upper extremity thrombosis, Budd-Chiari syndrome, and sagittal sinus thrombosis. DVTs are the most common venous involvement and may lead to pulmonary embolism, resulting in pulmonary hypertension. Any other site may involve venous thrombosis, including pelvic, renal, mesenteric, hepatic, portal, axillary, ocular, sagittal, and inferior vena cava. [6] | Antiphospholipid Syndrome -- History and Physical -- Vascular Thrombosis. APS can lead to arterial or venous thrombosis involving any organ system. These clots can be isolated or recurrent and involve blood vessels not commonly associated with other causes of thrombosis, such as upper extremity thrombosis, Budd-Chiari syndrome, and sagittal sinus thrombosis. DVTs are the most common venous involvement and may lead to pulmonary embolism, resulting in pulmonary hypertension. Any other site may involve venous thrombosis, including pelvic, renal, mesenteric, hepatic, portal, axillary, ocular, sagittal, and inferior vena cava. [6] |
article-17705_20 | Antiphospholipid Syndrome -- History and Physical -- Vascular Thrombosis | Arterial thrombosis may involve any sized arteries, from the aorta to small capillaries. The most common arterial manifestation of APS is transient ischemic events (TIEs) or ischemic stroke. The occurrence of TIEs or ischemic stroke in young patients without other risk factors for atherosclerosis should raise suspicion for APS. Other sites for arterial thrombosis may include retinal, brachial, coronary, mesenteric, and peripheral arteries. The occurrence of arterial thrombosis carries a poor prognostic value, given the high risk of recurrence in these cases. | Antiphospholipid Syndrome -- History and Physical -- Vascular Thrombosis. Arterial thrombosis may involve any sized arteries, from the aorta to small capillaries. The most common arterial manifestation of APS is transient ischemic events (TIEs) or ischemic stroke. The occurrence of TIEs or ischemic stroke in young patients without other risk factors for atherosclerosis should raise suspicion for APS. Other sites for arterial thrombosis may include retinal, brachial, coronary, mesenteric, and peripheral arteries. The occurrence of arterial thrombosis carries a poor prognostic value, given the high risk of recurrence in these cases. |
article-17705_21 | Antiphospholipid Syndrome -- History and Physical -- Pregnancy Morbidity | Pregnancy loss is common in patients with APS, especially in the second or third trimester. Although genetic and chromosomal defects are the most common causes of early pregnancy loss (<10 weeks of gestation), they may also occur in patients with APS. As noted above, late gestational loss (>20 weeks) is associated with almost a 10% positivity of one or more APLA. [6] Triple positivity, involving testing positive for lupus anticoagulant, anticardiolipin, and anti-β2GPI antibodies; previous pregnancy loss, history of thrombosis; and SLE are risk factors for adverse pregnancy-related outcomes and pregnancy losses in patients with APS. Besides pregnancy losses, other pregnancy-related complications in patients with APS include preeclampsia, fetal distress, premature birth, intrauterine growth retardation, placental insufficiency, placental abruption, and HELLP syndrome (Hemolysis, Elevated Liver enzymes, Low Platelet count). | Antiphospholipid Syndrome -- History and Physical -- Pregnancy Morbidity. Pregnancy loss is common in patients with APS, especially in the second or third trimester. Although genetic and chromosomal defects are the most common causes of early pregnancy loss (<10 weeks of gestation), they may also occur in patients with APS. As noted above, late gestational loss (>20 weeks) is associated with almost a 10% positivity of one or more APLA. [6] Triple positivity, involving testing positive for lupus anticoagulant, anticardiolipin, and anti-β2GPI antibodies; previous pregnancy loss, history of thrombosis; and SLE are risk factors for adverse pregnancy-related outcomes and pregnancy losses in patients with APS. Besides pregnancy losses, other pregnancy-related complications in patients with APS include preeclampsia, fetal distress, premature birth, intrauterine growth retardation, placental insufficiency, placental abruption, and HELLP syndrome (Hemolysis, Elevated Liver enzymes, Low Platelet count). |
article-17705_22 | Antiphospholipid Syndrome -- History and Physical -- Cutaneous Involvement | Several cutaneous manifestations have been reported, although all are non-specific for APS. Livedo reticularis is the most common cutaneous manifestation. However, it can also be observed in the healthy population and other disorders such as SLE, other connective tissue diseases, vasculitides, sepsis, multiple cholesterol emboli, and Sneddon syndrome. Skin ulcerations, especially in lower extremities, ranging from small to large ulcers resembling pyoderma gangrenosum, have been reported in patients with APS. Other cutaneous manifestations include nail-fold infarcts, digital gangrene, superficial thrombophlebitis, and necrotizing purpura. [16] | Antiphospholipid Syndrome -- History and Physical -- Cutaneous Involvement. Several cutaneous manifestations have been reported, although all are non-specific for APS. Livedo reticularis is the most common cutaneous manifestation. However, it can also be observed in the healthy population and other disorders such as SLE, other connective tissue diseases, vasculitides, sepsis, multiple cholesterol emboli, and Sneddon syndrome. Skin ulcerations, especially in lower extremities, ranging from small to large ulcers resembling pyoderma gangrenosum, have been reported in patients with APS. Other cutaneous manifestations include nail-fold infarcts, digital gangrene, superficial thrombophlebitis, and necrotizing purpura. [16] |
article-17705_23 | Antiphospholipid Syndrome -- History and Physical -- Valvular Involvement | Cardiac valve involvement is prevalent in patients APS, with some studies indicating a prevalence as high as 80%. [17] Mitral and aortic valves are most commonly involved with thickening, nodules, and vegetations evident on echocardiography. These abnormalities may lead to regurgitation or stenosis. | Antiphospholipid Syndrome -- History and Physical -- Valvular Involvement. Cardiac valve involvement is prevalent in patients APS, with some studies indicating a prevalence as high as 80%. [17] Mitral and aortic valves are most commonly involved with thickening, nodules, and vegetations evident on echocardiography. These abnormalities may lead to regurgitation or stenosis. |
article-17705_24 | Antiphospholipid Syndrome -- History and Physical -- Hematological Involvement | Thrombocytopenia has been observed in more than 15% of APS cases. [18] Severe thrombocytopenia leading to hemorrhage is rare. A positive Coombs test is frequently observed in patients with APS, although hemolytic anemia is rare. | Antiphospholipid Syndrome -- History and Physical -- Hematological Involvement. Thrombocytopenia has been observed in more than 15% of APS cases. [18] Severe thrombocytopenia leading to hemorrhage is rare. A positive Coombs test is frequently observed in patients with APS, although hemolytic anemia is rare. |
article-17705_25 | Antiphospholipid Syndrome -- History and Physical -- Neurological Involvement | The most common neurological complications of APS include TIEs and ischemic stroke, which may be recurrent, leading to cognitive dysfunction, seizures, and multi-infarct dementia. Blindness secondary to the retinal artery or vein occlusion can also occur. Sudden deafness secondary to sensorineural hearing loss has been reported. | Antiphospholipid Syndrome -- History and Physical -- Neurological Involvement. The most common neurological complications of APS include TIEs and ischemic stroke, which may be recurrent, leading to cognitive dysfunction, seizures, and multi-infarct dementia. Blindness secondary to the retinal artery or vein occlusion can also occur. Sudden deafness secondary to sensorineural hearing loss has been reported. |
article-17705_26 | Antiphospholipid Syndrome -- History and Physical -- Cardiac Involvement | Myocardial infarction and cardiac emboli are possible complications of APS. A non-ST segment elevation myocardial infarction with a normal coronary angiogram and abnormal cardiac magnetic resonance imaging, such as transmural or subendocardial late gadolinium enhancement, T2 abnormalities, or perfusion abnormalities, suggests APS. [15] | Antiphospholipid Syndrome -- History and Physical -- Cardiac Involvement. Myocardial infarction and cardiac emboli are possible complications of APS. A non-ST segment elevation myocardial infarction with a normal coronary angiogram and abnormal cardiac magnetic resonance imaging, such as transmural or subendocardial late gadolinium enhancement, T2 abnormalities, or perfusion abnormalities, suggests APS. [15] |
article-17705_27 | Antiphospholipid Syndrome -- History and Physical -- Pulmonary Involvement | Pulmonary artery thromboembolism from DVT is common and may lead to pulmonary hypertension. [19] Diffuse pulmonary hemorrhage resulting from pulmonary capillaritis has been reported. | Antiphospholipid Syndrome -- History and Physical -- Pulmonary Involvement. Pulmonary artery thromboembolism from DVT is common and may lead to pulmonary hypertension. [19] Diffuse pulmonary hemorrhage resulting from pulmonary capillaritis has been reported. |
article-17705_28 | Antiphospholipid Syndrome -- History and Physical -- Renal Involvement | Hypertension, proteinuria, and renal failure secondary to thrombotic microangiopathy are the classic renal manifestations of APS, although this is not specific. Other renal manifestations reported include renal artery thrombosis leading to refractory hypertension and focal cortical atrophy. | Antiphospholipid Syndrome -- History and Physical -- Renal Involvement. Hypertension, proteinuria, and renal failure secondary to thrombotic microangiopathy are the classic renal manifestations of APS, although this is not specific. Other renal manifestations reported include renal artery thrombosis leading to refractory hypertension and focal cortical atrophy. |
article-17705_29 | Antiphospholipid Syndrome -- History and Physical -- Catastrophic Antiphospholipid Syndrome | Catastrophic antiphospholipid syndrome (CAPS) is a rare but life-threatening complication of APS, with fewer than 1% of patients with APS developing CAPS. Mortality rates are high (48%), especially in patients with SLE or those with cardiac, pulmonary, renal, and splenic involvement. CAPS is characterized by thrombosis in multiple organs over a short period, typically spanning a few days. Small- and medium-sized arteries are most frequently involved. Clinical presentation varies depending on the organ involved and may include peripheral thrombosis, such as deep vein thrombosis, femoral artery thrombosis, or radial artery thrombosis; pulmonary complications, such as acute respiratory distress syndrome, pulmonary embolism, and pulmonary hemorrhage; renal manifestations, such as thrombotic microangiopathy and renal failure; cutaneous symptoms, such as livedo reticularis, digital ischemia, gangrene, and skin ulcerations; cerebral manifestations, such as ischemic stroke and encephalopathy; cardiac complications, such as valve lesions, myocardial infarction, and heart failure; hematological issues, such as thrombocytopenia; and gastrointestinal involvement, such as bowel infarction. [20] | Antiphospholipid Syndrome -- History and Physical -- Catastrophic Antiphospholipid Syndrome. Catastrophic antiphospholipid syndrome (CAPS) is a rare but life-threatening complication of APS, with fewer than 1% of patients with APS developing CAPS. Mortality rates are high (48%), especially in patients with SLE or those with cardiac, pulmonary, renal, and splenic involvement. CAPS is characterized by thrombosis in multiple organs over a short period, typically spanning a few days. Small- and medium-sized arteries are most frequently involved. Clinical presentation varies depending on the organ involved and may include peripheral thrombosis, such as deep vein thrombosis, femoral artery thrombosis, or radial artery thrombosis; pulmonary complications, such as acute respiratory distress syndrome, pulmonary embolism, and pulmonary hemorrhage; renal manifestations, such as thrombotic microangiopathy and renal failure; cutaneous symptoms, such as livedo reticularis, digital ischemia, gangrene, and skin ulcerations; cerebral manifestations, such as ischemic stroke and encephalopathy; cardiac complications, such as valve lesions, myocardial infarction, and heart failure; hematological issues, such as thrombocytopenia; and gastrointestinal involvement, such as bowel infarction. [20] |
article-17705_30 | Antiphospholipid Syndrome -- History and Physical -- Catastrophic Antiphospholipid Syndrome | The most common precipitating factors for CAPS are stopping anticoagulation in patients diagnosed with APS, infections, and surgical procedures. Prompt management of infections and minimization of no anticoagulation (or using low-dose anticoagulation) perioperatively are recommended. [21] Preliminary criteria for the classification of CAPS were published in 2003. [22] The 4 criteria are the following: Involvement of 3 or more organs, systems, or tissues Manifestations developing simultaneously or within less than 1 week Histopathological confirmation of small vessel occlusion in at least 1 organ or tissue Laboratory confirmation of the presence of APLA The presence of all 4 criteria can classify definite CAPS, whereas probable CAPS can be classified if 3 criteria are present and the fourth is incompletely fulfilled. | Antiphospholipid Syndrome -- History and Physical -- Catastrophic Antiphospholipid Syndrome. The most common precipitating factors for CAPS are stopping anticoagulation in patients diagnosed with APS, infections, and surgical procedures. Prompt management of infections and minimization of no anticoagulation (or using low-dose anticoagulation) perioperatively are recommended. [21] Preliminary criteria for the classification of CAPS were published in 2003. [22] The 4 criteria are the following: Involvement of 3 or more organs, systems, or tissues Manifestations developing simultaneously or within less than 1 week Histopathological confirmation of small vessel occlusion in at least 1 organ or tissue Laboratory confirmation of the presence of APLA The presence of all 4 criteria can classify definite CAPS, whereas probable CAPS can be classified if 3 criteria are present and the fourth is incompletely fulfilled. |
article-17705_31 | Antiphospholipid Syndrome -- Evaluation | In addition to clinical criteria, diagnosing APS requires lupus anticoagulant or moderate-to-high titers of IgG or IgM anticardiolipin or anti-β2GPI antibodies. The criteria also require a repeat APLA test to be positive 12 weeks after the initial positive test to exclude clinically unimportant or transient antibodies. If that duration is less than 12 weeks, or the gap between two separate clinical manifestations and positive laboratory tests is more than 5 years, the diagnosis of APS is questionable. [23] Please see StatPearls' companion resource, "Antiphospholipid Antibody Testing," for further information. | Antiphospholipid Syndrome -- Evaluation. In addition to clinical criteria, diagnosing APS requires lupus anticoagulant or moderate-to-high titers of IgG or IgM anticardiolipin or anti-β2GPI antibodies. The criteria also require a repeat APLA test to be positive 12 weeks after the initial positive test to exclude clinically unimportant or transient antibodies. If that duration is less than 12 weeks, or the gap between two separate clinical manifestations and positive laboratory tests is more than 5 years, the diagnosis of APS is questionable. [23] Please see StatPearls' companion resource, "Antiphospholipid Antibody Testing," for further information. |
article-17705_32 | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test | A positive lupus anticoagulant test is the strongest predictor of adverse pregnancy-related events. This test is more specific but less sensitive than anticardiolipin antibodies in predicting thrombosis. A positive lupus anticoagulant test is observed in 20% of patients with anticardiolipin antibodies, and anticardiolipin antibodies are observed in 80% of patients with a positive lupus anticoagulant test (see Table. Effect of Lupus Anticoagulant and Anticoagulants on Laboratory Testing). | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test. A positive lupus anticoagulant test is the strongest predictor of adverse pregnancy-related events. This test is more specific but less sensitive than anticardiolipin antibodies in predicting thrombosis. A positive lupus anticoagulant test is observed in 20% of patients with anticardiolipin antibodies, and anticardiolipin antibodies are observed in 80% of patients with a positive lupus anticoagulant test (see Table. Effect of Lupus Anticoagulant and Anticoagulants on Laboratory Testing). |
article-17705_33 | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test | A false-positive syphilis test does not meet the criteria for diagnosing APS. However, it is advisable to assess for APLAs in patients with previous thrombotic or adverse pregnancy-related events. The presence of a lupus anticoagulant indicates the presence of an in vitro coagulation inhibitor of phospholipid-dependent coagulation reactions. This inhibitor does not react directly with coagulation factors and is not associated with bleeding complications. False-positive and false-negative results can be observed in patients on heparin or warfarin. The lupus anticoagulant test involves 4 steps as follows: Initial screening, typically involving activated partial thromboplastin time or dilute Russell viper venom time, shows prolonged phospholipid-dependent clot formation. | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test. A false-positive syphilis test does not meet the criteria for diagnosing APS. However, it is advisable to assess for APLAs in patients with previous thrombotic or adverse pregnancy-related events. The presence of a lupus anticoagulant indicates the presence of an in vitro coagulation inhibitor of phospholipid-dependent coagulation reactions. This inhibitor does not react directly with coagulation factors and is not associated with bleeding complications. False-positive and false-negative results can be observed in patients on heparin or warfarin. The lupus anticoagulant test involves 4 steps as follows: Initial screening, typically involving activated partial thromboplastin time or dilute Russell viper venom time, shows prolonged phospholipid-dependent clot formation. |
article-17705_34 | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test | The prolonged screening test persists even after mixing the patient's plasma with normal platelet-poor plasma. This lack of correction suggests that the prolonged clotting time is not due to coagulation factor deficiencies, such as hemophilia, which is corrected with normal plasma. The prolonged screening test is corrected or improved upon the addition of excess phospholipid, which indicates phospholipid dependency. Exclusion of other inhibitors. | Antiphospholipid Syndrome -- Evaluation -- Lupus Anticoagulant Test. The prolonged screening test persists even after mixing the patient's plasma with normal platelet-poor plasma. This lack of correction suggests that the prolonged clotting time is not due to coagulation factor deficiencies, such as hemophilia, which is corrected with normal plasma. The prolonged screening test is corrected or improved upon the addition of excess phospholipid, which indicates phospholipid dependency. Exclusion of other inhibitors. |
article-17705_35 | Antiphospholipid Syndrome -- Evaluation -- Anticardiolipin and Anti-Beta-2-Glycoprotein-I Antibodies | Anticardiolipin antibodies and anti-β2GPI antibodies are assessed by ELISA, and common assays include tests for IgG and IgM isotypes. IgG antibodies correlate better with clinical manifestations compared to IgM or IgA antibodies. Titers of more than 40 IgG units are associated with thrombotic events, whereas lower titers have a less proven association with thrombotic events. | Antiphospholipid Syndrome -- Evaluation -- Anticardiolipin and Anti-Beta-2-Glycoprotein-I Antibodies. Anticardiolipin antibodies and anti-β2GPI antibodies are assessed by ELISA, and common assays include tests for IgG and IgM isotypes. IgG antibodies correlate better with clinical manifestations compared to IgM or IgA antibodies. Titers of more than 40 IgG units are associated with thrombotic events, whereas lower titers have a less proven association with thrombotic events. |
article-17705_36 | Antiphospholipid Syndrome -- Evaluation -- Other Laboratory Findings | Thrombocytopenia or anemia can be frequently observed in patients with APS. Renal failure and proteinuria may indicate renal involvement with thrombotic microangiopathy. The erythrocyte sedimentation rate may be high during the acute thrombotic event. However, markers of inflammation are typically normal otherwise. Patients with SLE may have positive serologies specific for SLE, such as antinuclear, anti-double-stranded DNA, or anti-smith. Hypocomplementemia is not typically observed in patients with APS, and its presence with renal involvement may indicate lupus nephritis. | Antiphospholipid Syndrome -- Evaluation -- Other Laboratory Findings. Thrombocytopenia or anemia can be frequently observed in patients with APS. Renal failure and proteinuria may indicate renal involvement with thrombotic microangiopathy. The erythrocyte sedimentation rate may be high during the acute thrombotic event. However, markers of inflammation are typically normal otherwise. Patients with SLE may have positive serologies specific for SLE, such as antinuclear, anti-double-stranded DNA, or anti-smith. Hypocomplementemia is not typically observed in patients with APS, and its presence with renal involvement may indicate lupus nephritis. |
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