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Different Mechanisms for Diastolic Mitral Regurgitation Illustrated by Three Comparative Cases
Author(s) -
Sisu Roxana C.,
Vinereanu Dragos
Publication year - 2011
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2010.01323.x
Subject(s) - cardiology , medicine , mitral regurgitation , diastole , functional mitral regurgitation , heart failure , blood pressure , ejection fraction
Diastolic mitral regurgitation (DMR) has been reported in patients with AV block, aortic regurgitation, cardiomyopaties, and in patients with long filling periods in atrial tachyarrhythmias. The mechanism for DMR is a reversal in the atrioventricular gradient during diastole. However, because of its relatively low velocity, it may be difficult to diagnose noninvasively. We present three different cases of diastolic MR in 2:1 second‐degree AV block, atrial flutter, and dilated cardiomyopathy, with different locations in diastole. Diastolic tricuspid regurgitation commonly accompanies DMR. Careful analysis of echocardiographical images related with online ECG is very important in order to delineate systolic and DMR, and their timing in systole and diastole (Echocardiography 2011;28:476‐479)