[The clinical significance of the audible and mechanographic manifestations of mitral valve prolapse].
Graphic techniques were employed to examine 82 patients with mitral valve prolapse verified on echocardiography. In addition to the known acoustic symptoms, enhancement of tones III, IV and V was identified, especially in transmitral regurgitation, together with inverted alternating of the components of tones I and II. Mitral click (OS) was discovered in one third of the examined. Uninterrupted protodiastolic and presystolic murmurs were found more seldom. They were more well-defined on the phonocardiogram recorded from the esophagus, at the level of the mitral valve. The right and left ventricular apex cardiography made it possible to diagnose hyperdynamia of the left atrium, the shortening of isometric relaxation of the left ventricle on elongation of this phase of the right ventricle. Both the curves had the M-like deformation in the systole. On the apex cardiogram of the left ventricle, the O point was always low, and the OF amplitude (rapid ventricular filling) was increased. During regurgitation, the OF transformed to an anomalous positive wave (a "surge"). Simultaneous alterations in the jugular phlebogram and in both apex cardiograms reflect changes in all four heart chambers. In part of the examined, pulmonary hypertension was established with the aid of indirect techniques. Esophagoatriography turned out diagnostically instrumental, since in some of the patients it enabled identification of systolic expansion of the entire posterior wall of the left atrium (regurgitation).