Anesth Analg 2007;105:764-769
© 2007 International Anesthesia Research Society
doi: 10.1213/01.ane.0000277494.30502.db
OBSTETRIC ANESTHESIOLOGY
Transdermal Scopolamine for Prevention of Intrathecal Morphine-Induced Nausea and Vomiting After Cesarean Delivery
Miriam J. P. Harnett, MB, FFARCSI,
Nollag ORourke, MB, FFARCSI,
Mary Walsh, MB, FFARCSI,
Jean Marie Carabuena, MD, and
Scott Segal, MD
From the Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Womens Hospital, Harvard Medical School, Boston, Massachusetts.
Abstract
BACKGROUND: Intrathecal morphine for cesarean delivery provides excellent postoperative analgesia but is associated with significant nausea and vomiting.
METHODS: We compared the antiemetic efficacy of transdermal scopolamine, IV ondansetron, and placebo during the first 24 h postoperatively. Two-hundred forty women undergoing cesarean delivery under spinal anesthesia were randomly allocated, in a double-blind study design, to receive transdermal scopolamine 1.5 mg, ondansetron 4 mg, or placebo at the time of cord clamping.
RESULTS: Our study showed that the overall rates for all emesis were 59.3% in the placebo group and were reduced to 40% in the scopolamine group and 41.8% in the ondansetron group. The greatest reduction in emesis in the scopolamine group when compared with placebo was in the 6–24 h time period.
CONCLUSION: Scopolamine is an effective medication for prophylactic use in parturients receiving intrathecal morphine while undergoing cesarean delivery. Its use, however, was associated with a higher incidence of side effects such as dry mouth and blurry vision.
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