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Randomized Controlled Trial
. 2022 Jun 1;39(6):549-557.
doi: 10.1097/EJA.0000000000001636. Epub 2021 Nov 16.

Dexamethasone for the treatment of established postoperative nausea and vomiting: A randomised dose finding trial

Christoph Czarnetzki  1 , Eric Albrecht, Jules Desmeules, Christian Kern, Jean-Baptiste Corpataux, Sylvain Gander, Sander M J van Kuijk, Martin R Tramèr
Affiliations
Randomized Controlled Trial

Dexamethasone for the treatment of established postoperative nausea and vomiting: A randomised dose finding trial

Christoph Czarnetzki et al. Eur J Anaesthesiol. .

Abstract

Background: Dexamethasone is widely used for the prevention of postoperative nausea and vomiting (PONV) but little is known about its efficacy for the treatment of established PONV.

Objective: To test the antiemetic efficacy of intravenous dexamethasone for the treatment of established PONV in adults undergoing surgery under general anaesthesia and to determine whether there is dose-responsiveness.

Design: The DexPonv trial is a multicentre, placebo-controlled, randomised, double-blind, dose-finding study. Inclusion of patients was between September 2012 and November 2017. Follow-up for PONV symptoms was for 24 h. Thirty days postoperatively, patients were contacted by study nurses for any information on postoperative bleeding and infection.

Setting: Four public hospitals in Switzerland.

Patients: A total of 803 adults scheduled for elective surgery without any antiemetic prophylaxis signed the consent form; 714 were included. Among those, 319 had PONV and 281 patients were eventually randomised (intention to treat population and safety set). The per protocol set consisted of 260 patients.

Interventions: Patients with PONV symptoms (including retching) were randomised to a single intravenous dose of dexamethasone 3, 6 or 12 mg or matching placebo.

Main outcome measures: The primary endpoint was the absence of further nausea or vomiting (including retching), within 24 h after administration of the study drug.

Results: Dexamethasone was ineffective during the first 24 h, whatever the dosage, compared to placebo, even when the model was adjusted for known risk factors (P = 0.170). There were no differences in the time to treatment failure or the quality of sleep during the first night. There was a positive correlation between the dose of dexamethasone and blood glucose concentrations (P < 0.001), but not with bleeding risk, wound infections or other adverse effects.

Conclusion: This randomised trial failed to show anti-emetic efficacy of any of the tested intravenous regimens of dexamethasone for the treatment of established PONV in adults undergoing surgery under general anaesthesia.

Trial registration: clinicaltrials.gov (NCT01975727).

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References

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    1. Kazemi-Kjellberg F, Henzi I, Tramer MR. Treatment of established postoperative nausea and vomiting: A quantitative systematic review. BMC Anesthesiol 2001; 1:I2.

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