[Information value of right precordial ECG leads in the diagnosis of right ventricular myocardial infarct].

An analysis of the right ECG precordial leads in 61 patients with left ventricular posteroinferior myocardial infarction and in 55 patients with combined affection of the right and left ventricular posteroinferior walls revealed a high informative value of ST segment elevation for recognition of right ventricular myocardial infarction on the 1st day. Further on the formation of the QS complex in V3R-5R leads was of certain value. Combined assessment of ST segment elevation and the QS formation in the right precordial leads significantly increased diagnostic potentialities in the detection of right ventricular myocardial infarction.

[Correlation of the indices of phase structure of left ventricular systole in patients with isolated left ventricular and combined biventricular myocardial infarction].

The correlation of indices of the phase structure of the left ventricular systole in patients with isolated left ventricular (140 patients) and combined biventricular (60 patients) myocardial infarction showed prolonged tension time resulting from isometric contraction, and a great difference between the actual and proper systolic values in the affection of both ventricles irrespective of the outcome of disease. In low sensitivity of indices of the phase analysis of the left ventricular systole the following indices proved to be specific and informative for recognition of the right ventricle involvement: a period of isometric contraction, duration of the common systole, difference between the actual and proper systolic values, and tension time.