Effects on ondansetron of postdural puncture headache after cesarean section under spinal anesthesia

Baharvand, Forough and Vahab, Sepideh and Beiranvand, Siavash (2024) Effects on ondansetron of postdural puncture headache after cesarean section under spinal anesthesia. Ann Med Surg (Lond).

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Abstract

Background: Spinal anesthesia is commonly performed for cesarean section, however, postdural puncture headache (PDPH) is one of its most common adverse effects. Ondansetron is an antiemetic for cancer treatment and analgesia-induced nausea and vomiting. In this study, the authors aim to evaluate the effect of postoperative ondansetron on PDPH. Methods: In this randomized controlled clinical trial study, 120 pregnant patients are ASA ll, undergoing elective cesarean section, were randomized into two groups (placebo or study). The patients in the study group, immediately after the birth of a baby and 24 h after the operation, received ondansetron 4 mg IV while the placebo group received a placebo. The severity and incidence of headache, postoperative nausea and vomiting, dizziness, neck and lower back pain, and the use of analgesia was assessed in the two groups. Results: The significant meaning of the time effect (P<0.001) indicated that regardless of the group, for each unit increase in time, the chance of developing a headache increased by 23%, which was statistically significant. Also, the significant meaning of the group effect indicated that regardless of time, patients who did not take indomethacin had ~4.11 times higher chances of developing a headache compared to those who received the medication, which was statistically significant (P=0.004). Conclusion: The administration of ondansetron significantly reduces the occurrence of postspinal anesthesia headaches and neck pain. There was no significant difference in headache severity between the two study groups.

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