[Electro- and phonocardiographic diagnosis of interventricular septal defect associated with aortic insufficiency].

Fifty-two post-surgery patients were studied for signs of interventricular septum defect in conjunction with aortal failure. The basic relevant signs were established to be insulated hypertrophy of the left ventricle or combined hypertrophy of both ventricles (with the left one being dominant) in conjunction with high amplitude pansystolic sounds and the presence of decreasing diastolic noise of aortal insufficiency, lagging behind tone II with the epicentre in points V-IV. The above signs may be used in the differential diagnosis of such congenital heart disease as an open arterial canal, rupture of Valsalva's sinus aneurysm into the right ventricular cavity coronary fistula and aortopulmonary septum defects.