[ECG dynamics at rest and during exertion after mitral commissurotomy].

Four degrees of left atrial electrical activity were identified by ECG made before and after closed mitral commissurotomy in 70 patients with mitral stenosis and sinus rhythm. The critical electrical activity of the left atrium and hypertrophy of the right ventricle along with the typical auscultation pattern of mitral stenosis were found to cardiographically correspond to critical stenosis of the left atrioventricular ostium in most cases. The area of the mitral orifice, which was attributable to that of the body, was 0.

[Aortocoronary bypass in progressive stenocardia].

The authors evaluate the efficacy of aortocoronary shunting in the treatment of 10 patients with progressive angina pectoris (unstable stenocardia) in follow-up periods of up to 12 months after the operation. In none of the patients did angina pectoris or myocardial infarction develop in the indicated postoperative periods.

[Aortocoronary shunting in unstable and early postinfarction angina pectoris due to lesion of a coronary artery].

Aortocoronary shunting was performed in 15 patients with unstable and early postinfarction angina pectoris. Coronarography revealed an isolated lesion of a coronary artery in all the patients. Two years after the operation the patients had no angina pectoris; no myocardial infarctions occurred.

[Aortocoronary shunting in the early period after myocardial infarction].

Fourteen patients aged 34-54 years underwent aortocoronary bypass surgery for early postinfarction angina within 30 days following myocardial infarction. In periods up to 1.5 years after surgery, angina pectoris was not detected in the patients; cases of recurrent myocardial infarction were not registered.