ECG response: October 27, 2015.
D000368:Aged; D004244:Dizziness / Q000209:etiology; D004417:Dyspnea / Q000209:etiology; D004562:Electrocardiography; D004630:Emergencies; D006329:Heart Conduction System / Q000503:physiopathology; D006333:Heart Failure / Q000150:complications; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D018879:Ventricular Premature Complexes / Q000503:physiopathology