Alfentanil May Reduce Early Postoperative Nausea and Vomiting in Moderate-to-High Risk Patients Undergoing Gastrointestinal Endoscopy: A Prospective Double-Blind Randomized Study.

Drug Des Devel Ther · 2026 · PMC13199725 · PMID 42199812

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did not reach statistical significanceno p-value reported

23 However, in high-risk patients with an Apfel score of 3, this effect did not reach statistical significance.

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