• Ikuhiro Hidaka, Takashi Asai, Tomoaki Miki, Tomoko Kubota, and Shoji Kawachi.
• Department of Anesthesia, Matsue Red Cross Hospital, Matsue 690-8506.
• Masui. 2003 Oct 1;52(10):1056-61.

BackgroundIntrathecal morphine for postoperative analgesia after caesarean section has been used in Europe and North America, but its use is not common in Japan.MethodsWe randomized 40 parturients to two groups, given either intrathecal saline (control group) or intrathecal morphine 0.05 mg (morphine group) for caesarean section. To both groups, we gave a diclofenac suppository 50 mg every 8 hours after surgery.ResultsThe area under curve for the visual analogue scale for pain during 24 hours after operation was significantly lower (P < 0.01) in the morphine group than the control group. In addition, the parturients who required pentazocine as a rescue analgesia was significantly fewer in the morphine group (5 parturients) than the control group (11 parturients). There was no significant difference between the two groups in the Apgar score of infants, pH in umbilical cord arterial and venous blood and the incidence of postoperative nausea and vomiting. The incidence of pruritus was significantly higher in the morphine group (11 parturients) than the control group (no parturient).ConclusionsIntrathecal morphine 0.05 mg and diclofenac suppository 50 mg given every 8 hours produced effective postoperative analgesia with minimum side effects after caesarean section.

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