Journal article

EFFECT OF ABRUPT MITRAL REGURGITATION AFTER BALLOON VALVULOPLASTY ON MYOCARDIAL LOAD AND PERFORMANCE

T WISENBAUGH, M BERK, R ESSOP, S MIDDLEMOST, P SARELI

JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY | ELSEVIER SCIENCE INC | Published : 1991

Abstract

The concept that mitral regurgitation masks myocardial dysfunction by reducing afterload and augmenting ejection performance has not been well established in humans. The effect of abruptly produced mitral regurgitation on left ventricular loading and performance was therefore evaluated in five patients who developed this complication after an otherwise successful percutaneous balloon mitral valvuloplasty. Mitral valve area by Gorlin formula calculated with forward flow increased from 0.92 +/- 0.14 to 2.75 +/- 0.82 cm2. Mean left atrial pressure did not decrease (19 +/- 4 to 19 +/- 6 mm Hg). The size of the left atrial V wave relative to mean left atrial pressure (peak V - mean left atrial pr..

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University of Melbourne Researchers