Abstract
Rationale
Buspirone, a partial 5HT1A agonist and D2 and D3 antagonist, has shown promising antiemetic efficacy when given parenterally in animal models, but its efficacy for the prevention of postoperative nausea and vomiting (PONV) is unknown.
Objective
To study the efficacy and dose-responsiveness of intravenous buspirone for the prevention of PONV.
Methods
A randomised, double-blind, placebo-controlled study was performed in adults at moderate to high PONV risk undergoing surgery with a general anaesthetic. Patients were randomised to receive an intravenous dose of buspirone (0.3, 1.0, 2.0, 3.0 mg) or placebo at the end of surgery. The primary endpoint was the cumulative 24-h PONV incidence (i.e. any nausea and/or vomiting). Vomiting included retching. Nausea was defined as a score of ≥4 on an 11-point verbal rating scale running from zero (no nausea) to ten (the worst nausea imaginable).
Results
A total of 257 patients received the study drug and fulfilled the criteria for inclusion in the primary efficacy and safety analyses. With placebo, the mean 24-h PONV incidence was 49.0 % (90 % confidence interval [CI] 37.5–60.5 %). With buspirone, that incidence ranged from a mean of 40.8 % (29.3–52.4 %) in the 1 mg arm to 58.0 % (46.5–69.5 %) in the 0.3 mg arm (P > 0.05 for all comparisons). There was no difference between placebo and buspirone at any dose for any other efficacy endpoint, nor in the number or severity of adverse events or any other safety measures.
Conclusion
We were unable to show that intravenous single-dose buspirone, at the tested dose-range, was effective at preventing PONV in surgical adult patients. The present study emphasises the difficulty in extrapolating from animal models of emesis to clinical efficacy in PONV.
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Abbreviations
- D:
-
Dopaminergic
- 5HT:
-
Serotoninergic
- NK:
-
Neurokinin
- PONV:
-
Postoperative nausea and vomiting
- PP:
-
Pyrimidinylpiperazine
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Acknowledgements
The study was funded by Acacia Pharma Ltd, the manufacturer of the study drug. The study design was developed by a steering committee (CCA, PD, TJG, PK, MRT) in collaboration with Acacia Pharma Ltd. Acacia Pharma Ltd edited the study protocol in collaboration with the steering committee members, organised meetings for steering committee members and investigators, supplied study drugs and was responsible for data analysis.
Participating study investigators and centres
France: Prof Hervé Bouaziz, Hôpital Central, Nancy; Prof Dominique Chassard, Hôpital Mere Enfant, Bron; Prof Pierre Diemunsch, CHU de Hautepierre, Strasbourg; Prof Gilles Lebuffe, Hôpital Huriez–CHRU, Lille; Dr Ngay Liu, Hôpital Foch, Suresnes; Prof Jean-Marc Malinowsky, Hôpital Maison Blanche–CHRU, Reims; Prof Emmanuel Samain, CHU Besançon, Besançon. Germany: Prof Leopold Eberhart, Philipps Universität Marburg, Marburg; Prof Peter Kranke and Dr Mustafa Rifai, Universitätsklinik Würzburg, Würzburg; Prof Johann Motsch, Universität Heidelberg, Heidelberg; Dr Kerstin D Röhm, Klinikum Ludwigshafen, Ludwigshafen; Prof Claudia Spies and Dr Martin Franck, Charité–Universitätsmedizin Berlin, Berlin; Dr Jan Wallenborn, Universität Leipzig, Leipzig. Switzerland: Prof Martin Tramèr and Dr Georges Savoldelli, Geneva University Hospitals, Geneva. USA: Prof Christian Apfel, UCSF Medical Center at Mt Zion, San Francisco, CA; Prof Tong Joo Gan and Dr Ashraf S Habib, Duke University Medical Center, Durham, NC; Dr Harold S Minkowitz, Memorial Hermann-Memorial City Hospital, Houston, TX
Conflict of interest and disclosure
There was a pre hoc agreement that the investigators would have the right to examine the data independently and to submit a manuscript for publication without first obtaining the consent of the sponsor and that the results of this study would be published as a full report, in their entirety and not as individual centre data, and independent of the result of the study. MRT had full access to all the data and coordinated the decision to submit for publication. All authors participated in writing the manuscript. GMF is an employee of Acacia Pharma Ltd.
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Clinicaltrials.gov identifier: NCT00895830.
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Kranke, P., Röhm, K.D., Diemunsch, P. et al. Intravenous buspirone for the prevention of postoperative nausea and vomiting. Eur J Clin Pharmacol 68, 1465–1472 (2012). https://doi.org/10.1007/s00228-012-1284-8
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DOI: https://doi.org/10.1007/s00228-012-1284-8