title: An unusual electrocardiographic abnormality.
mesh_terms: D000368:Aged; D002304:Cardiac Pacing, Artificial / Q000379:methods; D004417:Dyspnea / Q000209:etiology; D004487:Edema / Q000209:etiology; D004562:Electrocardiography; D006801:Humans; D006973:Hypertension / Q000150:complications; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications; D016171:Torsades de Pointes / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy