Exit block around a junctional pacemaker.
D000368:Aged; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology*; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000503:physiopathology