title: The nature of ventricular ectopic beats in chronic ischaemic heart disease.
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D009203:Myocardial Infarction / Q000150:complications*; D013637:Tape Recording; D013997:Time Factors