Wijbenga, J.A.M.

heart heart failure patient peptide failure natriuretic pattern heart rate variability atrial atrial natriuretic peptide variability study plasma exercise n-terminal brain natriuretic peptide concentration e /a ratio ejection fraction plasma concentrations doppler systolic function proanp n-terminal proanp systolic dysfunction ratio value analysis index diastolic function dysfunction ejection fraction peak oxygen consumption pressure response heart rate brain velocity diastolic deceleration time healt valsalva manoeuvre oxygen assessment consumption valsalva prognostic exercise capacity atrial natriuretic peptides probnp measurement echocardiography method manoeuvre result healt failure non-restrictive relation subject systolic function disease difference questionnaire deceleration blood prognostic value oxygen consumption circulation doppler echocardiography change quality capacity heart failure questionnaire cardiol chapter measure table cardiomyopathy