tokens: On univariate analyses , patients who developed hypotension had lower left ventricular ejection fraction ( P = 0.009 ) , and higher plasma N - terminal pro brain natriuretic peptide and troponin - T concentrations ( P = 0.046 and 0.008 , respectively ) , all markers of severity of the TTS attack ; hypotension also occurred less commonly in male than in female patients ( P = 0.014 ) .