Postoperative analgesia with hydromorphone and meperidine: a double-blind comparison.
D000698:Analgesia; D001794:Blood Pressure / Q000187:drug effects; D002986:Clinical Trials as Topic; D006801:Humans; D004091:Hydromorphone / Q000008:administration & dosage*; D007275:Injections, Intravenous; D008614:Meperidine / Q000008:administration & dosage*; D011182:Postoperative Care; D011229:Preanesthetic Medication; D012119:Respiration / Q000187:drug effects
D008614:Meperidine; D004091:Hydromorphone