title: Retrograde ventriculoatrial conduction in complete heart block: studies with His bundle electrography.
mesh_terms: D000368:Aged; D006332:Cardiomegaly / Q000209:etiology; D004562:Electrocardiography; D006326:Heart Auscultation; D006327:Heart Block / Q000150:complications / Q000503:physiopathology*; D006329:Heart Conduction System; D006801:Humans; D008297:Male; D008722:Methods