title: Manifestations of concealed reentry in the atrioventricular junction.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D001283:Atrioventricular Node / Q000503:physiopathology*; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D014693:Ventricular Fibrillation / Q000175:diagnosis / Q000209:etiology