title: Electrocardiograms of the month.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D014693:Ventricular Fibrillation