天津医药 ›› 2026, Vol. 54 ›› Issue (8): 865-869.doi: 10.11958/20260438

• 药物临床观察 • 上一篇    下一篇

2种术前镇静用药对小儿全凭静脉麻醉术中qCON和qNOX及维持用药的影响

郑宏茹(), 王志芬(), 李明珊, 王昊琦, 元新颖, 杜琳娜, 刘金柱   

  1. 天津大学儿童医院/天津市儿童医院麻醉科(邮编300134)
  • 收稿日期:2026-02-09 修回日期:2026-04-13 出版日期:2026-08-15 发布日期:2026-08-07
  • 通讯作者: △E-mail:wzf9001@126.com
  • 作者简介:郑宏茹(1972),女,副主任医师,主要从事儿科麻醉方面研究。E-mail:zhr598@163.com
  • 基金资助:
    天津市卫生健康科技项目(TJWJ2025QN064);天津市医学重点学科建设项目(TJYXZDXK-3-016B)

Effects of two preoperative sedative regimens on intraoperative qCON and qNOX and maintenance anesthetic requirements in pediatric total intravenous anesthesia

ZHENG Hongru(), WANG Zhifen(), LI Mingshan, WANG Haoqi, YUAN Xinying, DU Linna, LIU Jinzhu   

  1. Department of Anesthesiology, Tianjin University Children's Hospital/Tianjin Children's Hospital, Tianjin 300134, China
  • Received:2026-02-09 Revised:2026-04-13 Published:2026-08-15 Online:2026-08-07
  • Contact: △E-mail: wzf9001@126.com

摘要:

目的 基于意识指数(qCON)和伤害感受指数(qNOX)监测,评估术前鼻喷右美托咪定和咪达唑仑静脉注射对小儿全凭静脉麻醉(TIVA)术中麻醉深度和维持用药的影响。方法 本研究为前瞻性、随机、双盲对照试验,纳入行扁桃体和腺样体射频消融术患儿79例(年龄3~6岁,体质量10~25 kg)。按随机数字表法分为3组:A组(未用镇静药,27例)、B组(鼻喷2.0~2.5 μg/kg右美托咪定,26例)、C组(静脉注射0.05 mg/kg咪达唑仑,26例)。麻醉诱导均为:舒芬太尼+依托咪酯+丙泊酚+顺式阿曲库铵,同时静脉泵注丙泊酚+瑞芬太尼,术中通过调整泵注剂量,维持qCON值在40~60,qNOX值在30~80。记录麻醉诱导前(T0)、气管插管前(T1)、手术开始后5 min(T2)、停药前(T3)各时间点的血流动力学指标、qCON和qNOX、瑞芬太尼与丙泊酚术中泵注剂量,及术后苏醒情况。结果 T2—T3期间B组和C组的qCON和qNOX均明显低于A组(P<0.05);A、B、C组瑞芬太尼和丙泊酚剂量依次降低,C组术后拔管时间长于A组和B组(P<0.05),苏醒期Richmond躁动-镇静量表(RASS)评分低于A组和B组(P<0.05)。结论 在小儿丙泊酚联合瑞芬太尼TIVA中,术前鼻喷右美托咪定和静脉注射咪达唑仑均能加深麻醉深度,降低qCON和qNOX值,减少瑞芬太尼剂量,咪达唑仑可协同显著减少丙泊酚剂量,但会轻度延长术后拔管时间。

关键词: 右美托咪定, 咪达唑仑, 伤害感受指数, 意识指数, 小儿麻醉

Abstract:

Objective To evaluate the effects of preoperative intranasal dexmedetomidine and intravenous midazolam on anesthesia depth and maintenance drug requirements during pediatric total intravenous anesthesia (TIVA), as monitored by the consciousness index (qCON) and nociceptive index (qNOX). Methods This prospective, randomized, double-blind controlled trial enrolled 79 children (aged 3-6 years, weighing 10-25 kg) scheduled for radiofrequency ablation of tonsils and adenoids. Patients were randomly divided into three groups: group A (no premedication, n=27), group B (intranasal dexmedetomidine 2.0-2.5 μg/kg, n=26), and group C (intravenous midazolam 0.05 mg/kg, n=26). Anesthesia was induced with sufentanil, etomidate, propofol, and cisatracurium, followed by continuous intravenous infusion of propofol and remifentanil. Infusion rates were adjusted intraoperatively to maintain qCON between 40 and 60, and qNOX between 30 and 80. Hemodynamic parameters, qCON and qNOX values, intraoperative infusion doses of remifentanil and propofol, and postoperative recovery profiles were recorded at four time points: before anesthesia induction (T0), before tracheal intubation (T1), 5 minutes after surgery commencement (T2), and before discontinuation of anesthetics (T3). Results During T2-T3, qCON and qNOX values in the group B and C were significantly lower than those in the group A (P<0.05). The maintenance doses of both remifentanil and propofol decreased sequentially across groups A, B, and C. The extubation time in the group C was significantly longer than that in the group A and B (P<0.05), and the richmond agitation-sedation scale (RASS) score during the recovery period was significantly lower in the group C than in the group A and B (P<0.05). Conclusion In pediatric TIVA with propofol and remifentanil, preoperative intranasal dexmedetomidine and intravenous midazolam both deepen anesthesia, reduce qCON and qNOX values, and decrease the required dose of remifentanil. Midazolam can significantly reduce propofol consumption synergistically, but may mildly prolong postoperative extubation time.

Key words: dexmedetomidine, midazolam, quantum nociceptive index, quantum consciousness index, pediatric anesthesia

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