[Disorders of intraventricular conductivity in ischemic heart disease].

An analysis of 439 cases of interventricular blocks in ischaemic heart disease is presented, 75.2% of the disorders developing in the branches of the left His' bundle. Intraventricular block was more common in cases of large focal myocardial changes. Bifascicular blocks preceeded full atrioventricular block more often than other forms of intraventricular conductivity dosorders. The greatest difficulties were encountered in the electrocardiographic diagnosis of focal changes in the posterior wall of the left ventricle when the left anterior branch of His' bundle was blocked.