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机构地区:[1]南京大学医学院附属鼓楼医院麻醉科,江苏南京210008 [2]南京医科大学附属南京医院南京市第一医院麻醉科,江苏南京210006
出 处:《中国医药导报》2015年第13期95-98,共4页China Medical Herald
基 金:江苏省南京市卫生青年人才培养工程(第一层次)基金项目(宁卫科[2011]42号)
摘 要:目的 研究体外循环(CPB)停机后吸人麻醉药七氟醚对左心室收缩功能的影响.方法 选取2010年10~12月于南京医科大学附属南京医院就诊的36例风湿性心脏病二尖瓣病变且需择期在CPB下行二尖瓣置换术(MVR)的患者.将其随机分为两组,每组各18例,丙泊酚组持续以丙泊酚静脉维持麻醉,七氟醚组在CPB后5 min,静脉麻醉基础上开始吸入0.5~1最小肺泡浓度(MAC)七氟醚.分别记录锯胸骨前(T1)和停CPB后5 min(T2)、30 min(T3)、60 min (T4)4个时点的平均动脉压(MAP)、心率(HR)和中心静脉压(CVP),采用经食管超声心动图(TEE)技术监测T1~T4 4个时点的左心室射血分数(LVEF)、左室短轴缩短率(FS)、每搏输出量指数(SVI)以及左心室压力最大上升速率(△dp/△dt).结果 与T2时比较,丙泊酚组T3及T4时MAP明显升高,差异有统计学意义(P<0.05);与T1时比较,两组在CPB停机后△dp/△dt均明显升高(P<0.01),七氟醚组LVEF、FS、SVI等观察指标在CPB停机后略有下降,但差异无统计学意义(P>0.05),T4时七氟醚组与丙泊酚组比较LVEF明显下降(P<0.05).结论 对于CPB下行MVR患者,CPB停机后吸入0.5~1 MAC七氟醚后可抑制左心室收缩功能.Objective To investigate the effects of Sevoflurane on left ventricular systolic function of patients undergoing mitral valve replacement (MVR) under cardiopulmonary bypass (CPB).Methods Thirty-six ASA Ⅱ-Ⅲ patients scheduled for MVR under CPB were involved,and randomly divided into two groups,Propofol group (n=18) and Sevoflurane group (n=18).Anesthesia was maintained with intravenous Propofol in both groups,inhalation of 0.5-1 MAC Sevoflurane after CPB was administered in Sevoflurane group.Mean arterial pressure (MAP) was recorded before sternotomy (Ti) and at 5 min (T2),30 min (T3),60 min (T4) after CPB,simultaneously left ventricular ejection fraction (LVEF),left ventricular fractional shortening (FS),stroke volume index (SVI) and the maximum rate of rise of left ventricular pressure (△dp/△dt) were measured by transesophageal echocardiography (TEE).Results Compared with T2,MAP increased significantly at T3 and T4 in Propofol group (P < 0.05);△dp/△dt of two groups after CPB were increased significantly compared with T1 (P < 0.01),LVEF,FS and SVI decreased mildly after CPB in Sevoflurane group,but there was no statistical significance(P > 0.05).Compared with Propofol group,LVEF decreased significantly in Sevoflurane group at T4 (P < 0.05).Conclusion For the patient undergoing MVR under CPB,0.5-1 MAC Sevoflurane inhalation after CPB depressed left ventricular systolic function.
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