[Valvulo-muscular kinetics of the heart in some rhythm and conductivity disorders]

To study the valvulo-muscular kinetics of the heart in the presence of various rhythm and conductivity disorders 20 patients were examined by means of ultrasonic valvulocardiography, electrokimography, oesophagoatriography and rheography. It was found that in cases of left venous ostium stenosis complicated by atrial fibrillation the opening of the mitral valve during the diastole occurs in 0.03--0.04 sec following the beginning of the II sound, and in cases of cardiosclerosis complicated by atrial fibrillation -- in 0.08 sec following the beginning of the II sound of the phonocardiogram. In cases of atrioventricular block, stage I and II, a lagging of the perisystolic signal was noted on the ultrasonic cardiogram after the termination of the P--wave of ECG by 0.02--0.08 sec, with the period of the perisystolic signal growing up to 0.01 sec. In cases of an incomplete atrioventicular block, stage III, the perisystolic signal during the blocked perisystole was found to last as long as 0.18 sec. In cases of complete atrioventricular block the perisystolic signal was found to lagg behind after the termination of the P--wave on ECG by 0.06--0.08 sec. In cases of ventricular extrasystole early movements of the mitral valve were noted, preceeding the extrasystolic complex on ECG by 0.08 sec.