title: The effects of  -blocking drugs on atrioventricular conduction and contractility.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage / Q000494:pharmacology; D000818:Animals; D004285:Dogs; D006321:Heart / Q000187:drug effects*; D006329:Heart Conduction System / Q000187:drug effects*; D010096:Oxprenolol / Q000008:administration & dosage / Q000494:pharmacology; D011433:Propranolol / Q000008:administration & dosage / Q000494:pharmacology; D011802:Quinidine / Q000008:administration & dosage / Q000494:pharmacology; D013015:Sotalol / Q000008:administration & dosage / Q000494:pharmacology; D013565:Sympatholytics / Q000494:pharmacology*
chemical_list: D000319:Adrenergic beta-Antagonists; D013565:Sympatholytics; D010096:Oxprenolol; D011433:Propranolol; D013015:Sotalol; D011802:Quinidine