EC50 of Ciprofol Combined With Remifentanil for Inhibiting Tracheal Responses in Patients Undergoing Gynecological Surgery: a Two-phase Up-and-down Sequential Allocation Study

Summary

1. The combined induction of intubation with propofol and remifentanil is widely used in clinical anesthesia, primarily through a single intravenous injection. Target-controlled infusion (TCI) technology, which combines pharmacology with clinical practice, offers a more stable and precise infusion mode; 2. This project aims to explore the half-effective concentration (EC50) of propofol combined with remifentanil for inhibiting tracheal intubation stimulation through a sequential approach under the monitoring of qNOX pain index.

Timeline

Start

2026-03-03

Primary completion

2026-04-03

Completion

2026-04-06

Publications

• Background 洪桂平. 环泊酚靶控输注在口腔癌根治术中的应用[D]. 中南大学, 2023.
• Background Schuller PJ, Pretorius JPG, Newbery KB. Response of the Conox quantitative electroencephalographic monitor to neuromuscular block in awake volunteers. Br J Anaesth. 2025 Sep;135(3):660-667. doi: 10.1016/j.bja.2025.05.023. Epub 2025 Jul 18.
• Background Wu B, Zhu W, Wang Q, Ren C, Wang L, Xie G. Efficacy and safety of ciprofol-remifentanil versus propofol-remifentanil during fiberoptic bronchoscopy: A prospective, randomized, double-blind, non-inferiority trial. Front Pharmacol. 2022 Dec 21;13:1091579. doi: 10.3389/fphar.2022.1091579. eCollection 2022.
• Background Hu C, Ou X, Teng Y, Shu S, Wang Y, Zhu X, Kang Y, Miao J. Sedation Effects Produced by a Ciprofol Initial Infusion or Bolus Dose Followed by Continuous Maintenance Infusion in Healthy Subjects: A Phase 1 Trial. Adv Ther. 2021 Nov;38(11):5484-5500. doi: 10.1007/s12325-021-01914-4. Epub 2021 Sep 24.
• Background Teng Y, Ou MC, Wang X, Zhang WS, Liu X, Liang Y, Zuo YX, Zhu T, Liu B, Liu J. Pharmacokinetic and pharmacodynamic properties of ciprofol emulsion in Chinese subjects: a single center, open-label, single-arm dose-escalation phase 1 study. Am J Transl Res. 2021 Dec 15;13(12):13791-13802. eCollection 2021.
• Background Lan H, Liu S, Liao Y, Xu B, Lin Y, Wu X, Chen Q, Chen H, Guan X. EC50 and EC95 of Remifentanil for Inhibiting Bronchoscopy Responses in Elderly Patients During Fiberoptic Bronchoscopy Under Ciprofol Sedation: An Up-and-Down Sequential Allocation Trial. Drug Des Devel Ther. 2024 Dec 31;18:6487-6497. doi: 10.2147/DDDT.S490907. eCollection 2024.
• Background Vide S, Kreuzer M, Ferreira A, Couto M, Agusti M, Jaramillo S, Schneider G, Garcia PS, Abelha F, Amorim P, Troconiz I, Larson M, Gambus P. Cortical, subcortical, brainstem and autonomic responses to nociception under total intravenous anesthesia. J Clin Anesth. 2025 Apr;103:111825. doi: 10.1016/j.jclinane.2025.111825. Epub 2025 Apr 12.
• Background Kox WJ, von Heymann C, Heinze J, Prichep LS, John ER, Rundshagen I. Electroencephalographic mapping during routine clinical practice: cortical arousal during tracheal intubation? Anesth Analg. 2006 Mar;102(3):825-31. doi: 10.1213/01.ane.0000197776.26307.fa.
• Background Ledowski T. Objective monitoring of nociception: a review of current commercial solutions. Br J Anaesth. 2019 Aug;123(2):e312-e321. doi: 10.1016/j.bja.2019.03.024. Epub 2019 Apr 30.

Drugs

Indications

No indication recorded.