机构地区:[1]广东省惠州市第一人民医院麻醉科,516001
出 处:《中国医药》2015年第5期738-742,共5页China Medicine
基 金:广东省惠州市科技计划项目(2013Y055)
摘 要:目的 探讨老年手术患者蛛网膜下腔—硬膜外联合麻醉(腰硬联合麻醉)后用右美托咪定镇静,Narcotrend指数和右美托咪定输注浓度与镇静深度间的相关关系.方法 研究设计为随机双盲对照试验.将2013年7-12月广东省惠州市第一人民医院择期行下肢手术老年手术患者60例完全随机分为右美托咪定组(30例)和对照组(30例).腰硬联合麻醉后,右美托咪定组于手术开始前20 min持续泵注右美托咪定负荷剂量0.5 μg/kg,输注时间为15 min,后以0.5 μg/(kg·h)维持至手术结束.对照组泵注等量0.9%氯化钠注射液.记录腰硬联合麻醉后给药前(T0)、给负荷剂量结束即刻(T1)及负荷剂量后10 min(T2)、30 min(T3)、60min(T4)、术毕(T5)的心率、收缩压、舒张压、平均动脉压(MAP)、呼吸频率、脉搏血氧饱和度(SpO2)、Ramsay评分和Narcotrend指数.结果 与对照组比较,右美托咪定组在T1~ T5时心率、收缩压、舒张压和MAP均下降,差异均有统计学意义[右美托咪定组心率:(66±8)、(67 ±5)、(66 ±4)、(70 ±7)、(71±9)次/min,收缩压:(113±8)、(120 ±7)、(100±8)、(110±9)、(113 ±6)mmHg(1 mmHg=0.133 kPa),舒张压:(64±8)、(63±9)、(65 ±7)、(60±8)、(62±7)mmHg,MAP:(74 ±8)、(82±6)、(81±9)、(77 ±6)、(79±7)mmHg;对照组心率:(80±7)、(93±11)、(88±9)、(92 ±9)、(95 ±7)次/min,收缩压:(140 ±9)、(145 ±8)、(155 ±9)、(150±10)、(155 ±9) mmHg,舒张压:(80±8)、(90 ±9)、(95±10)、(92 ±8)、(100±9)mmHg,MAP:(96 ±9)、(108 ±7)、(115±11)、(111 ±8)、(118±10) mmHg,P<0.05].与右美托咪定组To时点[心率:(85±9)次/min,收缩压:(135±9)mmHg,舒张压:(135±9) mmHg,MAP:(95±10) mmHg]比较,T1~T5时点右美托咪定组收缩压、舒张压�Objective To explore the effect of dexmedetomidine infusion on Narcotrend (NT) index and sedation depth in elderly patients undergoing subarachnoid-epidural anesthesia.Methods Totally 60 elderly patients undergoing lower limbs surgery under subarachnoid-epidural anesthesia from June to December 2013 were enrolled and randomly divided into dexmedetomidine group and control group (each group had 30 cases).After subarachnoid-epidural anesthesia,loading dose of dexmedetomidine (0.5μg/kg) was pumped for 15 min,then it was intravenously dripped [0.5 μg/(kg · h)] till the end of the operation in dexmedetomidine group 20 min before the operation started.In control group,equal volume of 0.9% sodium chloride was infused.After anesthesia,the heart rate (HR),systolic blood pressure (SBP),diastolic blood pressure (DBP),mean arterial pressure (MAP),breathing rate (RR),blood oxygen saturation (SpO2),Ramsay score and NT index were measured before drug infusion (T0),immediately (T1),10 min (T2),30 min (T3),60 min (T4) at the end of loading dose administration and after the operation (T5).Results The HR,SBP,DBP and MAP in dexmedetomidine group were all statistically lower than those in control group on T1-T5 [(66 ±8),(67 ±5),(66 ±4),(70 ±7),(71 ± 9) times/min vs (80 ±7),(93± 11),(88 ±9),(92±9),(95±7) times/min;(113±8),(120±7),(100 ±8),(110±9),(113 ±6) mmHg vs (140±9),(145 ±8),(155 ±9),(150±10),(155 ±9) mmHg;(64±8),(63 ±9),(65 ±7),(60 ±8),(62 ±7) mmHg vs (80 ±8),(90 ±9),(95 ± 10),(92 ±8),(100±9) mmHg;(74±8),(82 ±6),(81 ±9),(77±6),(79 ±7) mmHg vs (96±9),(108 ±7),(115±11),(111±8),(118±10) mmHg](allP<0.05).On T1-T5,the HR,SBP,DBPand MAP were reduced significantly compared with those on T0 in dexmedetomidine group [(85 ±9) times/min,(135 ±9) mmHg,(135 ±
关 键 词:右美托咪定 蛛网膜下腔-硬膜外联合麻醉 NARCOTREND指数 清醒镇静
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