PMID: 6408152Aug 1, 1983Paper

Right ventricular function in valvular heart disease: relation to pulmonary artery pressure

Journal of the American College of Cardiology
R GroseT Yipintosoi

Abstract

Right ventricular angiography was performed in 46 patients with acquired valvular heart disease and 8 normal subjects. Right ventricular ejection fraction (RVEF) correlated highly only with right ventricular peak systolic pressure (RVPSP) and mean pulmonary artery pressure, both in patients with and without tricuspid insufficiency. For the group, RVEF = -0.33 RVPSP + 63 (correlation coefficient [r] = -0.76, probability [p] less than 0.001). Of 20 patients with moderate or severe elevation of pulmonary artery pressure, 17 (85%) had an abnormally low ejection fraction (less than 47%), while 19 (73%) of 26 patients with normal or mildly elevated pulmonary artery pressure had a normal right ventricular ejection fraction. In seven patients with elevated pulmonary artery pressure, a second ventriculogram was performed during intravenous nitroglycerin administration. Nitroglycerin produced a significant decrease in right ventricular peak systolic pressure (59 +/- 22 to 49 +/- 18 mm Hg, mean +/- standard deviation) (p less than 0.05) and in end-systolic volume (71 +/- 16 to 59 +/- 11 m1/m2) (p less than 0.05), and an increase in ejection fraction (43 +/- 9 to 48 +/- 7%) (p less than 0.05). Thus, at least part of the depression of eject...Continue Reading

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