Doppler Evidence for Reduced
Atrial Contribution to Left
Ventricular Filling in Patients
with a Dilated Cardiomyopathy
and a 'B-Bump' on the
Mitral Valve Echocardiogram
Abstract:The hemodynamic contribution of left atrial contraction to left ventricular
filling in dilated cardiomyopathy (DCM) remains controversial. The degree of
filling of the left ventricle may influence this contribution. Previous studies
have demonstrated a correlation between an elevated left ventricular enddiastolic
pressure (LVEDP) and the presence of a ‘B-bump’ (a deflection on
the A-C closure slope) on the anterior mitral valve leaflet on the M-mode
echocardiogram. To assess whether the presence of a ‘B-bump’ … Show more
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