title: Atrioventricular vagal block: functional versus organic.
mesh_terms: D000109:Acetylcholine / Q000378:metabolism; D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D002346:Carotid Sinus; D002648:Child; D004562:Electrocardiography; D006327:Heart Block / Q000378:metabolism / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009411:Nerve Endings / Q000378:metabolism; D014630:Vagus Nerve / Q000378:metabolism / Q000503:physiopathology*
chemical_list: D000109:Acetylcholine