Preventing postoperative nausea and vomiting: Prevention in context

doi:10.1136/bmj.333.7565.448-a

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John B Carlisle, consultant anaesthetist (john.carlisle@nhs.net)

Torbay Hospital, Torquay, Devon TQ2 7AA

EDITOR—Metoclopramide is one of the drugs that we reviewed in our recent Cochrane meta-analysis.1 We also found that metoclopramide was effective. We found that, compared with placebo, the average relative risk for postoperative nausea and vomiting was 0.76 for all doses of metoclopramide, which compares to 0.89, 0.75, and 0.63 for 10 mg, 25 mg, and 50 mg of metoclopramide in the study reported by Wallenborn et al.2 We would like to comment on the useful information that Wallenborn's study provides in this context.

Wallenborn et al provided the most …