Document Type : Original Article

Authors

1 Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences Isfahan, Iran

2 Department of Peadiatric Surgery, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Objective: The purpose of the present study was to evaluate the efficacy of 
midazolam‑ondansetron combination in prevention of postoperative nausea and 
vomiting (PONV) after middle ear surgery and its comparison with using midazolam 
or ondansetron alone.
Methods: One hundred and forty patients were enrolled in four groups to receive 
midazolam 0.75 mg/kg in group M, ondansetron 4 mg in group O, midazolam 0.75 mg/
kg and ondansetron 4 mg in group MO, and saline 0.9% in group S intravenously just 
before anesthesia. Assessment of nausea, vomiting, rescue antiemetic, and side effects 
of study drugs such as headache and dizziness was carried out postoperatively for 24 h.
Findings: The incidence of PONV was significantly smaller in groupMO than groupM and 
groupO, while there was no significant difference between group M and groupO during 
the first 24 h postoperatively. Requirement to the additional antiemetic was significantly 
more in group S (71.4%) compared to other groups, while in group MO (11.4%) was 
lower than group M (31.4%) and group O (34.3%).
Conclusion: Our study showed that prophylactic administration of midazolam 
0.75 mg/kg combined with ondansetron 4 mg was more effective than using midazolam 
or ondansetron alone in prevention of PONV after middle ear surgery.

Keywords

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