Double ventricular parasystole.
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000150:complications; D013997:Time Factors