title: Comparison of butorphanol and morphine as analgesics for coronary bypass surgery: a double-blind, randomized study.
mesh_terms: D000700:Analgesics / Q000008:administration & dosage*; D000768:Anesthesia, General / Q000379:methods; D002077:Butorphanol / Q000494:pharmacology*; D001026:Coronary Artery Bypass; D004311:Double-Blind Method; D005260:Female; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D009019:Morphinans / Q000494:pharmacology*; D009020:Morphine / Q000494:pharmacology*; D011897:Random Allocation
chemical_list: D000700:Analgesics; D009019:Morphinans; D009020:Morphine; D002077:Butorphanol