title: A clinicopathological study on the electrical axis of the heart in 1,000 autopsy cases.
abstract: The electrical axis of the heart in 1,000 aged people more than 56 years of age was classified as normal axis in 58%, left axis deviation in 17.4%, mild left axis devaition in 21.9%, and right axis deviation in 2.7%. Pathological examination disclosed that left axis deviation was associated with myocardial infarction in 20%, right bundle branch block in 16%, but showed no significant relationships with coronary sclerosis, myocardial fibrosis and cardiac hypertrophy. Right axis deviation was associated with right bundle branch block in 66.7% and right ventricular hypertrophy in 22.2%
mesh_terms: D000368:Aged; D001344:Autopsy; D002037:Bundle-Branch Block / Q000503:physiopathology; D006332:Cardiomegaly / Q000503:physiopathology; D003327:Coronary Disease / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000503:physiopathology*; D006801:Humans; D006973:Hypertension / Q000150:complications; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology; D009206:Myocardium / Q000473:pathology*