罗哌卡因用于亚高原地区脊麻剖宫产的剂量研究  

Ropivacaine dosage study for sub-high altitude cesarean spinal anesthesia

作　　者：张乐 马孟召 董王军 路耀军 高也悦 黄绍强 杨晨 ZHANG Le;MA Meng-zhao;DONG Wang-jun;LU Yao-jun;GAO Ye-yue;HUANG Shao-qiang;YANG Chen(Department of Anesthesia,Obstetrics and Gynecology Hospital,Fudan University,Shanghai 200090,China;Department of Anesthesia,Yongping County People's Hospital,Dali 672600,Yunnan Province,China)

机构地区：[1]复旦大学附属妇产科医院麻醉科,上海200090 [2]云南省永平县人民医院麻醉科,大理672600

出　　处：《复旦学报（医学版）》2024年第5期778-783,共6页Fudan University Journal of Medical Sciences

摘　　要：目的探讨罗哌卡因用于亚高原地区脊麻剖宫产的半数有效剂量(median effective dose,ED50)。方法选择一直生活在亚高原地区,拟在腰硬联合麻醉下行择期剖宫产的单胎产妇30例,采用上下序贯法,脊麻罗哌卡因初始剂量14 mg(1.4 mL),有效定义为脊麻注药后15 min内针刺双侧感觉阻滞平面T6或以上,胎儿娩出前不需额外硬膜外麻醉。根据前一例是否有效决定下一例产妇的剂量递增或递减1 mg。分别用Dixon上下序贯法和保序回归,计算罗哌卡因的ED50和95%CI,记录研究期间产妇低血压、恶心呕吐等不良反应的发生率。结果共30名产妇参与研究,平均年龄(30.88±5.56)岁,孕周(40±1.41)周,身高(156.69±5.80)cm,体重(67.44±10.48)kg。Dixon上下序贯法计算等比重罗哌卡因的ED50为10.68 mg(95%CI:9.65~12.58 mg)。保序回归计算ED50为10.33 mg(95%CI:9.41~12.07 mg),验证结论的准确性和敏感性。术中产妇出现低血压8例,心动过缓1例,恶心呕吐7例,未出现高血压、寒颤。结论罗哌卡因用于亚高原地区脊麻剖宫产的ED50为10.68 mg,高于目前已知的平原地区患者所需的ED50。Objective To determine the median effective dose(ED50)of ropivacaine for spinal anesthesia in sub-high altitude cesarean sections.Methods A total of 30 parturients from sub-high altitudes received initial 14 mg(1.4 mL)of 1%ropivacaine intrathecally.Effectiveness was defined by sensory block to T6 within 15 minutes without additional epidural anesthesia.Doses were adjusted by±1 mg based on response.ED50 and 95%CI were estimated using Dixon’s method and isotonic regression.Adverse reactions were noted.Results Thirty parturients with an average age of(30.88±5.56)years,gestational weeks of(40±1.41)weeks,height of(156.69±5.80)cm,and weight of(67.44±10.48)kg were studied.The ED50 was 10.68 mg(95%CI:9.65-12.58 mg)by Dixon’s method and 10.33 mg(95%CI:9.41-12.07 mg)by isotonic regression.Intraoperatively,8 cases of hypotension,1 case of bradycardia,and 7 cases of nausea and vomiting were observed,no hypertension or shivering occurred among the parturients.Conclusion The ED50 for ropivacaine in sub-high altitude cesarean sections is 10.68 mg,which is higher than the currently known ED50 required for patients in plain areas.

关 键 词：亚高原 罗哌卡因 剖宫产 半数有效剂量(ED50) 脊麻 

分 类 号：R614.41[医药卫生—麻醉学]