tokens: Left ventricular end - diastolic pressure fell from 11 . 5 + / - 1 . 4 ( mean + / - SE ) to 5 . 6 + / - 0 . 9 mm Hg ( P less than 0 . 001 ) and left ventricular end - diastolic volume fell from 100 + / - 17 to 82 + / - 12 ml / m2 ( P less than 0 . 01 ) 1 h after ouabain infusion was completed .