Perioperative medicine & outcomes

Chewing Gum to Treat Postoperative Nausea and Vomiting in Female Patients: A Multicenter Randomized Trial

AnesthesiologyPublished Randomised controlled trial

Primary resultResult — go to the resultAbsolute risk difference −17.3 % 95% CI −30.4 to −4.3

Authors' conclusion

Chewing gum cannot be recommended as an alternative to ondansetron for treatment of postoperative nausea and vomiting in female patients administered antiemetic prophylaxis.

Study context

Population
Female patients aged 12 yr or older with PONV in PACU after volatile anaesthetic-based GA for laparoscopic or breast surgery, with protocolised antiemetic prophylaxis865 enrolled
Participants
218 patients
Comparison
Chewing gum vs IV ondansetron for treatment of PONV in PACU
  • Chewing gumn = 103
  • Ondansetronn = 105reference
Primary endpoint
Complete response: cessation of nausea, retching or vomiting with no recurrence nor rescue medication
Follow-up
2 h after the randomised intervention
Methodological detailsmulticentre, noninferiority, 17 hospitals in Australia and New Zealand
  • Multicentre
  • Noninferiority
  • 17 hospitals in Australia and New Zealand

Primary result

As reported in the abstract

Absolute risk difference

−17.3 %

95% CI −30.4 to −4.3

Events by treatment group

Chewing gum vs Ondansetron
absolute risk difference −17.3 % (95% CI −30.4 to −4.3)

Further findings

OutcomeHR (95% CI)
Time to complete responseLonger with chewing gum0.53 (0.34–0.83)
OutcomeAbsolute risk difference (%) (95% CI)
Antiemetics received · 24 h after surgeryMore likely with chewing gum14.1 (1.6–26.5)

Original publication

Chewing Gum to Treat Postoperative Nausea and Vomiting in Female Patients: A Multicenter Randomized Trial. Anesthesiology. Published 30 October 2024. doi:10.1097/aln.0000000000005283

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