| Summary: | Lini Chen,* Yongguo Xie,* Xueke Du, Weiyong Qin, Lifu Huang, Junmin Dai, Ke Qin,* Jianfeng Huang* Department of Anesthesiology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China*These authors contributed equally to this workCorrespondence: Ke Qin; Jianfeng Huang, Department of Anesthesiology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530007, People’s Republic of China, Tel/Fax +8613878103578 ; +8613978896039, Email qinke303@163.com; 295812612@qq.comBackground: Ciprofol is currently used for painless gastrointestinal endoscopy and anesthesia induction. However, whether it is superior to propofol and its optimal dose remains unknown.Methods: A total of 149 patients, 63 males and 86 females, aged 18– 80 years, BMI 18– 28 kg/m2, ASA I–III, were divided randomly into four groups: propofol group (group P, n = 44), ciprofol 0.2mg/kg group (group C2, n = 38), ciprofol 0.3mg/kg group (group C3, n = 36) and ciprofol 0.4 mg/kg group (group C4, n = 31). Groups C2, C3 and C4 had injected IV with ciprofol 0.2, 0.3 and 0.4 mg/kg, respectively. Group P had injected IV with propofol 1.5mg/kg. The time for disappearance of the eyelash reflex, gastrointestinal endoscopy time, recovery time, and the Modified Observer’s Assessment of Alertness/Sedation (MOAA/S) score at awakening (T1), 15 minutes after awakening (T2) and 30 minutes after awakening (T3) were recorded.Results: Compared with group P, the time to fall asleep was significantly shortened, and the incidence of nausea and vomiting and injection pain was significantly lower in groups C2, C3 and C4 (P < 0.05). There was no significant difference in recovery time and recovery quality between each group (P > 0.05). Compared with group P and C4, the incidence of hypotension and respiratory depression was significantly lower in groups C2 and C3 (P < 0.05).Conclusion: The appropriate dose of ciprofol for painless gastrointestinal endoscopy is more advantageous than propofol in hemodynamics and respiratory stability, with less injection pain and nausea and vomiting, which is worthy of clinical promotion.Keywords: ciprofol, propofol, painless gastrointestinal endoscopy
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