Assessing the impact of aprepitant and ondansetron on postoperative nausea and vomiting in orthognathic surgeries: a randomized controlled trial.

"Declarations Ethics approval and consent to participateThis study was by the Ethics Committee of the research institute 0f Dental sciences-Shahid Beheshti University of medical sciences approved this study. The study registered at the Iranian Registry of Clinical Trials ( https://irct.ir/16/12/2022, IRCT20211205053279N3). All patients signed the informed consent form, and all methods were carried out in accordance with the Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding No funding was received in any forms."

"Trial registration Iranian Registry of Clinical Trials (IRCT code: IRCT20211205053279N3), date of registration: 16/12/2022."