Mitral Insufficiency: Cardiac Mechanics as Studied with the Kinetocardiogram and Ballistocardiogram

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Abstract
Precordial movements (kinetocardiograms) and ballistocardiograms were studied in patients with "pure" mitral insufficiency. Certain characteristic features of the records were noted and contrasted with those found in patients with mitral stenosis. The finding suggests fundamental differences in the mode of ventricular contraction and relaxation in mitral insufficiency and mitral stenosis.