全方向M型超声心动图评价室性期前收缩患者左心室收缩功能  

Evaluation of myocardial function at systolic phase of left ventricle in premature ventricular contractions with Omni-directional M-mode Echocardiography

作　　者：郭薇[1] 林丽卿[1] 

机构地区：[1]福建医科大学省立临床学院福建省心血管病研究所,福州350001

出　　处：《中华临床医师杂志（电子版）》2011年第17期4953-4958,共6页Chinese Journal of Clinicians(Electronic Edition)

基　　金：卫生部科研基金-福建省卫生教育联合攻关计划项目(WKJNo.2005-2-010)

摘　　要：目的应用全方向M型超声心动图(OME)评价室性期前收缩患者的左心室整体及局部心肌收缩功能。方法 60例室性期前收缩患者分成两组,A组为30例无器质性心脏病室性期前收缩患者,B组为30例器质性心脏病室性期前收缩患者,应用OME测量期前收缩A组和B组的窦性心搏及室性心搏时二尖瓣环六个位点处的收缩期峰值速度和左心室短轴乳头肌水平六个节段的收缩期心外膜速度(Vepi)、心内膜速度(Vendo)、速度差(ΔV)、心外膜运动加速度(Aepi)、心内膜运动加速度(Aendo)、相对力(F)。结果 (1)期前收缩A组和B组在室性心搏时的二尖瓣环处六个位点收缩期峰值速度与窦性心搏时相比均降低,差异有统计学意义(P<0.05)。(2)期前收缩A组室性心搏时左心室乳头肌水平各个节段的Vepi、Vendo、ΔV及Aepi、Aendo、F与窦性心搏相比,均升高(P>0.05);B组室性心搏时左心室乳头肌水平各个节段的Vepi、Vendo、ΔV及Aepi、Aendo、F与窦性心搏相比,均无明显变化(P>0.05)。结论 OME能够较客观准确地反映室性期前收缩患者在室性心搏时整体心肌功能,而局部心肌功能则与患者本身有无器质性心脏病有关,为临床治疗室性期前收缩提供了有用的依据。Objective To evaluate the movement function of left ventricular at systolic phase with Omni-directional M-mode Echocardiography(OME)in patients with premature ventricular contractions(PVCs).Methods 60 PVCs patients were divided into two groups:30 PVCs patients without structural heart diseases(Group A),other 30 PVCs patients with structural heart diseases(Group B).The mitral annular velocities were measured by OME and quantitative tissue velocity imaging(QTVI)respectively.All values of patients with PVCs were recorded during sinus beats and PVC beats respectively.The myocardial motion acceleration of epicardium and endocardium and force of the peak systolic phase were measured during sinus beats and PVC beats respectively.Results(1)The parameters of mitral annular velocity on group A and group B patients during PVC beats were decreased significantly.(2)The velocity and acceleration of epicardium and endocardium and force in group A during PVC beats were obviously higher than those during sinus beats at the papillary muscle level of parasternal left ventricular short-axis views.The velocity and acceleration of epicardium and endocardium and force in group B had no significant change.Conclusions(1)OME can accurately reflect the change of global and regional function in patients with PVCs.(2)It is valuable to assess regional myocardial function during PVC beats in patients with structural heart diseases or not.

关 键 词：超声心动描记术 室性早搏复合征 心室功能 左 

分 类 号：R540.45[医药卫生—心血管疾病]