• Nittaya Inthigood, Tripop Lertbunnaphong, and Atthapon Jaishuen.
• Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
• J. Obstet. Gynaecol. Res. 2017 Jan 1; 43 (1): 92-99.

AimThe aim of this study was to determine the efficacy of a single 40-mg intravenous (i.v.) dose of parecoxib as an adjunctive analgesia to intrathecal morphine after elective cesarean delivery (CD).MethodsA total of 82 low-risk term pregnant women who were scheduled for elective CD during the June 2014-June 2015 study period were enrolled. Two hours after surgery, subjects were randomly assigned to receive either i.v. injection of 2 mL (40 mg) parecoxib (study group; n = 41) or 2 mL normal saline solution (control group; n = 41). Patient randomization into groups was determined by the hospital's central computer system. Outcome measurements included total postoperative supplemental meperidine consumption, recorded pain score by numeric pain rating scale at 6, 12, 18, and 24 h, postoperatively, and patient satisfaction.ResultsPatient characteristics and pregnancy outcomes were comparable between groups. Total postoperative meperidine consumption was not significantly different between groups (12.7 ± 18.8 mg vs 8.3 ± 16.7 mg; P > 0.05). Compared with control, the study group was significantly less likely to experience moderate to severe postoperative pain (score ≥ 4) at 6 h (0% vs 21.9%; P = 0.002). Study group patients reported higher satisfaction than control group patients (median score: 8 vs 6; P < 0.01). No patients in either group reported adverse effects from their assigned intervention.ConclusionParecoxib did not demonstrate effectiveness in reducing patient requirement for supplementary meperidine after CD. However, administration of a single 40-mg dose of i.v. parecoxib after elective CD demonstrated effectiveness in reducing pain scores, with a resulting increase in patient satisfaction.© 2016 Japan Society of Obstetrics and Gynecology.

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