[Recurrent phase-4 atrioventricular block].
D001919:Bradycardia / Q000150:complications*; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D014474:Unconsciousness / Q000209:etiology