右美托咪定对心肺转流下冠状动脉旁路移植术后心脏同步化运动的影响
发布时间:2018-10-05 16:50
【摘要】:目的探讨右美托咪定对心肺转流(CPB)下行冠状动脉旁路移植术(CABG)患者心脏同步化运动的影响。方法择期CPB下行CABG患者24例,年龄43~75岁,体表面积1.53~2.00m2,ASAⅡ或Ⅲ级,心功能Ⅱ或Ⅲ级。采用随机数字表法分为两组:右美托咪定组(D组)和对照组(C组),每组12例。两组术中麻醉维持均采用全凭静脉麻醉,D组于主动脉开放后经微量注射泵静注右美托咪定负荷剂量0.5μg/kg(10min内注射完),然后以0.5μg·kg-1·h-1维持给药至术毕,C组静注等量生理盐水。分别于开胸前(T1)和CPB停机后30min(T2)、60min(T3)记录血流动力学指标:HR、MAP、CVP、心脏指数(CI),左右心室收缩功能指标:左室射血分数(LVEF)、右室射血分数(RVEF)和心脏同步性参数:PR间期、QRS时限、室间机械延迟(IVMD)。结果与T1时比较,T2、T3时两组HR明显增快、CI明显升高(P0.01);与C组比较,D组T2、T3时PR间期明显延长(P0.05)。两组间QRS时限及IVMD差异无统计学意义。结论 CPB下冠状动脉旁路移植术患者,右美托咪定负荷剂量0.5μg/kg后以0.5μg·kg-1·h-1维持能够延长PR间期,影响房室间同步化运动,但对左右心室间电机械同步化运动无明显影响。
[Abstract]:Objective to investigate the effect of dexmetomidine on cardiac synchronization in patients with (CABG) undergoing coronary artery bypass grafting (CABG) with cardiopulmonary bypass (CPB). Methods Twenty-four patients (age 4375 years) with CABG undergoing elective CPB were enrolled in this study. The body surface area was 1.532.00m2ASA 鈪,
本文编号:2254133
[Abstract]:Objective to investigate the effect of dexmetomidine on cardiac synchronization in patients with (CABG) undergoing coronary artery bypass grafting (CABG) with cardiopulmonary bypass (CPB). Methods Twenty-four patients (age 4375 years) with CABG undergoing elective CPB were enrolled in this study. The body surface area was 1.532.00m2ASA 鈪,
本文编号:2254133
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