title: [Occult conduction in the atrio-ventricular node: preliminary observations].
mesh_terms: D000319:Adrenergic beta-Antagonists; D000328:Adult; D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000503:physiopathology; D001283:Atrioventricular Node / Q000503:physiopathology*; D001285:Atropine; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000319:Adrenergic beta-Antagonists; D001285:Atropine
vernacular_title: Conduzione occulta nel nodo atrio-ventricolare: osservazioni preliminari.