Medication errors: use extra caution when administering narcotics to postop patients.
D000777:Anesthetics; D004357:Drug Synergism; D006801:Humans; D008508:Medication Errors; D008614:Meperidine; D009020:Morphine / Q000627:therapeutic use*; D009732:Nursing Care; D010149:Postoperative Pain / Q000188:drug therapy*
D000777:Anesthetics; D009020:Morphine; D008614:Meperidine