title: Effect of autonomic blockade on ventricular refractoriness and atrioventricular nodal conduction in humans. Evidence supporting a direct cholinergic action on ventricular muscle refractoriness.
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D001283:Atrioventricular Node / Q000503:physiopathology*; D001285:Atropine / Q000494:pharmacology; D001340:Autonomic Nerve Block; D001794:Blood Pressure / Q000187:drug effects; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010277:Parasympathomimetics / Q000494:pharmacology*; D011433:Propranolol / Q000494:pharmacology; D012032:Refractory Period, Electrophysiological / Q000187:drug effects
chemical_list: D010277:Parasympathomimetics; D001285:Atropine; D011433:Propranolol