title: Regular atrial fibrillation spells trouble.
mesh_terms: D016170:Accelerated Idioventricular Rhythm / Q000175:diagnosis* / Q000209:etiology; D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000209:etiology; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications*