BRIEF RESEARCH REPORT article
Front. Med.
Sec. Intensive Care Medicine and Anesthesiology
Case report: re-sedation using remimazolam anesthesia in patients with multiple injuries during recovery: a case report and literature review
Provisionally accepted
- 1Xi'an Aerospace General Hospital, Xi'an, China
- 2The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Remimazolam combined with flumazenil can shorten recovery time, but the occurrence of re-sedation may put the patient at risk. Herein, we report a case of a 50-year-old woman who underwent general anesthesia using remimazolam. During emergence from general anesthesia, she briefly regained consciousness after receiving 0.4 mg of flumazenil and then fell unconscious again. The disturbance of consciousness lasted for 75 minutes. We diagnosed re-sedation after ruling out other possible causes. We simulated anesthetic concentration changes using TIVA trainer software, further confirming re-sedation through mechanistic analysis. Additionally, we reviewed the literature and analyzed the potential reasons for the occurrence of re-sedation under various conditions. The occurrence of re-sedation is not only related to the administration of flumazenil but also to individual differences in the effect-site concentration of remimazolam and the phenomenon of rapid tolerance. In clinical practice, flumazenil should be used cautiously, avoiding single high-dose administration, and considering delayed administration when appropriate. For critically ill patients, clinicians should closely monitor and guard against the occurrence of re-sedation. Further research is needed to determine the optimal time to administer flumazenil and to identify the demographic and clinical characteristics of patients who experience re-sedation, thereby guiding patient safety.
Keywords: Remimazolam Besylate, Re-sedation, Flumazenil, case report, general anesthesia
Received: 23 Sep 2025; Accepted: 12 Nov 2025.
Copyright: © 2025 GUOZUN, Chaungguo and Gao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Wei Gao, gaowei2906@xjtufh.edu.cn
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