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全身麻醉剖宫产术中应用右美托咪啶对患者血流动力学和新生儿的影响
引用本文:韩传宝,蒋秀红,吴霞,丁正年.全身麻醉剖宫产术中应用右美托咪啶对患者血流动力学和新生儿的影响[J].中国医师进修杂志,2014(33):40-43.
作者姓名:韩传宝  蒋秀红  吴霞  丁正年
作者单位:南京医科大学第一附属医院麻醉科,210029
基金项目:江苏省六大人才高峰资助项目(2012-WS-023)
摘    要:目的 探讨全身麻醉剖宫产术中应用右美托咪啶对患者血流动力学和新生儿的影响.方法 选择单胎足月妊娠拟在全身麻醉下行子宫下段剖宫产术的患者38例,美国麻醉医师协会(ASA)分级Ⅰ或Ⅱ级.按随机数字表法分为右美托咪啶组和0.9%氯化钠组,每组19例.右美托咪啶组麻醉诱导前10 min持续输注负荷量右美托咪啶0.6tμg/kg,继以0.4μg/(kg·h)持续输注,手术关腹时停药;0.9%氯化钠组泵入等体积的0.9%氯化钠.记录两组输注前(T0)、输注10 min时(T1)、气管插管时(T2)、胎儿娩出时(T3)、胎儿娩出后15 min时(T4)、手术结束时(T5)、拔管时(T6)和拔管后15 min时(T7)的收缩压(SBP)、舒张压(DBP)和心率.胎儿娩出后,抽取脐静脉、脐动脉血进行血气分析,并记录新生儿出生后1,5 min时的Apgar评分.结果 两组患者T0时SBP、DBP和心率比较差异无统计学意义(P>0.05).与T0比较,右美托咪啶组SBP、DBP和心率在T2明显升高(136±12)mmHg(1 mmHg=0.133 kPa)比(124±9) mmHg,(83±10)mmHg比(72±6)mmHg,(93±11)次/min比(81±8)次/min],差异有统计学意义(P<0.05);0.9%氯化钠组SBP、DBP和心率在T2-6均明显升高(151±14),(137±11),(132±10),(132±9),(142±13)mmHg比(125±9)mmHg; (94±13),(85±9),(80±8),(80±9),(86±11) mmHg比(74±7)mmHg;(122±15),(105±12),(90±9),(89±10),(97±11)次/min比(81±9)次/min],差异有统计学意义(P<0.05).与0.9%氯化钠组相同时间比较,右美托咪啶组SBP、DBP和心率在T2-6均明显降低,差异有统计学意义(P<0.05).两组脐静脉、脐动脉血血气分析和新生儿出生后1,5 min Apgar评分比较差异均无统计学意义(P>0.05).结论 全身麻醉剖宫产术中应用右美托咪啶有利于维持母体血流动力学的稳定而对新生儿没有不良影响.

关 键 词:右美托咪啶  麻醉  剖宫产术  血流动力学  新生儿

Neonatal effects and efficacy of dexmedetomidine on haemodynamics during cesarean section under general anesthesia
Han Chuanbao,Jiang Xiuhong,Wu Xia,Ding Zhengnian.Neonatal effects and efficacy of dexmedetomidine on haemodynamics during cesarean section under general anesthesia[J].Chinese Journal of Postgraduates of Medicine,2014(33):40-43.
Authors:Han Chuanbao  Jiang Xiuhong  Wu Xia  Ding Zhengnian
Institution:( Department of A nesthesiology ,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029, China)
Abstract:Objective To explore the neonatal effects and efficacy of dexmedetomidine on haemodynamics during cesarean section under general anesthesia.Methods Thirty-eight ASA Ⅰ or Ⅱ parturients with a single baby at full term in vertex presentation,scheduled for cesarean section under general anesthesia,were randomly divided into 2 groups (each group of 19 patients) by random digits table method:dexmedetomidine group and normal saline group.The patients in dexmedetomidine group received an intravenous infusion loading dose of 0.6 μ g/kg of dexmedetomidine,starting 10 min before induction of anesthesia,following with an intravenous infusion 0.4 μ g/ (kg ·h) of dexmedetomidine until peritoneal closure.The patients in normal saline group received an intravenous infusion of isovolumic of normal saline.Recording the systolic blood pressure (SBP),diastolic blood pressure (DBP) and heart rate (HR) before infusion (T0) and 10 min after the start of infusion (T1),at tracheal intubation (T2),at delivery of the baby (T3),15 min after delivery (T4),at end of operation (T5),at extubation (T6) and 15 min after extubation (T7).The blood of umbilical vein and umbilical artery was drawn for gas analysis,and the Apgar scores at 1 and 5 min were also recorded after delivery.Results The level of SBP,DBP and HR at T0 had no significant difference between two groups (P 〉 0.05).In dexmedetomidine group,the level of SBP,DBP and HR were significantly higher at T2 than those at T0 (136 ± 12) mmHg (1 mmHg =0.133 kPa) vs.(124 ± 9) mmHg,(83 ± 10) mmHg vs.(72 ± 6) mmHg,(93 ± 11) times/min vs.(81 ± 8) times/min] (P 〈 0.05).In normal saline group,the level of SBP,DBP and HR at T2-6 (151 ± 14),(137 ± 11),(132 ± 10),(132 ±9),(142± 13)mmHgvs.(125 ±9)mmHg;(94±13),(85±9),(80±8),(80±9),(86±11)mmHgvs.(74 ±7) mmHg; (122 ±15),(105 ±12),(90 ±9),(89 ± 10),(97 ±11) times/min
Keywords:Dexmedetomidine  Anesthesia  Cesarean section  Haemodynamics  Newborn
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