title: [Comparative effects of norepinephrine alone and norepinephrine with nitroglycerin or phentolamine on the normal and ischemic heart].
mesh_terms: D000818:Animals; D003327:Coronary Disease / Q000188:drug therapy*; D004285:Dogs; D004359:Drug Therapy, Combination; D006321:Heart / Q000187:drug effects*; D007275:Injections, Intravenous; D005996:Nitroglycerin / Q000008:administration & dosage / Q000494:pharmacology*; D009638:Norepinephrine / Q000008:administration & dosage / Q000494:pharmacology*; D010646:Phentolamine / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D005996:Nitroglycerin; D009638:Norepinephrine; D010646:Phentolamine