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African Health Sciences
Makerere University Medical School
ISSN: 1680-6905
EISSN: 1680-6905
Vol. 14, No. 2, 2014, pp. 453-459
Bioline Code: hs14065
Full paper language: English
Document type: Research Article
Document available free of charge

African Health Sciences, Vol. 14, No. 2, 2014, pp. 453-459

 en Dexamethasone versus a combination of dexamethasone and ondansetron as prophylactic antiemetic in patients receiving intrathecal morphine for caesarean section
Imeh, Akpan; Olaniyi, Oladapo; Simeon, Olateju & Omotola, Odusoga


: Background: Intrathecal morphine for caesarean delivery provides excellent postoperative analgesia but it is commonly associated with nausea and vomiting. This prospective, randomized, double blind study was carried out to compare the effectiveness of a combination of dexamethasone and ondansetron with dexamethasone alone for prevention of postoperative nausea and vomiting (PONV) following intrathecal morphine injection for caesarean section.
Methods: A total of 108 parturients aged 18-40 years for elective caesarean section were randomized into 2 groups (n=54) to receive either intravenous dexamethasone 8mg (Group A) or a combination of intravenous dexamethasone 8mg and ondansetron 4mg (group B). The study drug for each group consisted of 0.5% hyperbaric bupivacaine and 0.2mg morphine. The primary outcome variables were postoperative nausea and vomiting (PONV) which were assessed for a period of 24 hours. The patient’s vital signs were monitored and documented.
Results: The incidence of nausea and vomiting was significantly reduced in patients who received a combination of dexamethasone and ondansetron compared with dexamethasone alone (9.3% Vs 37%, respectively, P = 0.003).
Conclusion: This study showed that a combination of dexamethasone and ondansetron administered prophylactically significantly reduced the incidence of PONV in pregnant women on intrathecal morphine for caesarean section.

Dexamethasone; Ondansetron; Nausea and Vomiting; Morphine; Caesarean Section

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