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意识指数2与瑞芬太尼剂量在无痛胃镜中的关系 被引量:6

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摘要 目的探讨意识指数2(IOC2)监测与瑞芬太尼在无痛胃镜检查中的相关性。方法择期行无痛胃镜检查患者80例,按数字表法随机分为C组和R2、R4、R6组,每组20例。麻醉诱导:C组采用静脉推注丙泊酚1.5~2.5 mg/kg(0.3 mL/s),R2、R4、R6组在输注丙泊酚同时分别靶控输注2、4、6 ng/mL瑞芬太尼(MINTO模型,血浆浓度),到达目标浓度后停止输注该药。各组麻醉维持均为持续输注丙泊酚4~12 mg/(kg·h),IOC1维持于40~60时开始胃镜检查。术中心率(HR)、平均动脉压(MAP)高于基础值20%或发生体动反应时,单次追加丙泊酚20~40 mg,必要时给予乌拉地尔10~20 mg,HR、MAP低于基础值20%时予加快输液及减小丙泊酚输注速率,必要时给予阿托品0.5 mg或麻黄碱5~15 mg,所有患者脉搏血氧饱和度(SpO_2)低于95%时行下颌关节托举,SpO_2持续低于90%超过2 min时停止所有操作,行面罩吸氧及手控辅助呼吸。记录各组患者术前(T1)、镜检开始(T2)、镜检结束(T3)及术毕5 min(T4)的IOC1和IOC2,并记录IOC2最低值和起效时间(麻醉诱导开始到IOC2下降至最低值)、围术期低血压、高血压、心动过缓、心动过速、低氧血症、体动反应发生情况、丙泊酚用量及苏醒时间。结果随着瑞芬太尼剂量增加,R4和R6组丙泊酚用量减少、苏醒时间缩短、IOC2最低值变小,起效时间较短(P<0.05),IOC2最低值与瑞芬太尼浓度呈负相关,其相关系数为-0.297。结论 IOC2与瑞芬太尼呈负相关,随着瑞芬太尼剂量增加,起效时间缩短。
出处 《广东医学》 CAS 北大核心 2017年第8期1274-1276,共3页 Guangdong Medical Journal
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