title: The electrocardiogram and vectorcardiogram of ectopic ventricular beats.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology; D005117:Cardiac Complexes, Premature / Q000175:diagnosis*; D004562:Electrocardiography; D006801:Humans; D009203:Myocardial Infarction / Q000150:complications; D010138:Pacemaker, Artificial / Q000009:adverse effects; D014672:Vectorcardiography