title: Electrocardiogram of the month. Advanced atrioventricular block with long pauses following ventricular extrasystoles.
mesh_terms: D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D013599:Systole