Complete atrioventricular block with intact retrograde conduction due to a concealed extranodal anomalous pathway.
D000368:Aged; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D010138:Pacemaker, Artificial