Vectorcardiographic study of the QRS loop in patients with left anterior focal block.
D000368:Aged; D000787:Angina Pectoris / Q000150:complications; D001024:Aortic Valve Stenosis / Q000150:complications; D002037:Bundle-Branch Block / Q000175:diagnosis; D003327:Coronary Disease / Q000150:complications; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D006973:Hypertension / Q000150:complications; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000150:complications; D014672:Vectorcardiography