二维斑点追踪成像技术评价左束支传导阻滞患者左心室心肌应变的价值  

Role of two-dimensional speckle tracking imaging in evaluating left ventricular myocardial strain in patients with left bundle branch block

作　　者：张艳娟 姚静 吴红平 周蕾 季玲 徐芳 雍永宏 

机构地区：[1]南京医科大学第一附属医院心血管病科,江苏省210029

出　　处：《江苏医药》2016年第8期922-924,共3页Jiangsu Medical Journal

摘　　要：目的探讨二维斑点追踪成像技术(2D-STI)评价左束支传导阻滞(LBBB)患者左心室(LV)心肌应变的价值。方法采用2D-STI检测20例孤立性LBBB患者[A组,LV射血分数(LVEF)≥50%]、20例合并有心力衰竭的LBBB患者(B组,LVEF<50%)及25例正常人群(C组)LV的整体纵向峰值应变(GLPS)、心外膜GLPS(GLPS-epi)、心内膜GLPS(GLPS-endo)及LV内应变达峰时间的标准差(T-SD)。结果 A、B组GLPS、GLPS-endo和T-SD均差于C组,且B组GLPS-epi差于C组(P<0.01)。A组GLPS、GLPS-epi、GLPS-endo和T-SD均优于B组(P<0.01)。结论 2D-STI可评估LBBB患者LV心肌应变,GLPS-endo是反映病情的敏感指标。Objective To explore the role of two-dimensional speckle tracking imaging（2D-STI）in evaluating left ventricular myocardial strain in the patients with left bundle branch block（LBBB）.Methods Myocardial strain-related parameters of global longitudinal peak strain（GLPS）,GLPS-epi,GLPS-endo and standard deviation of time to peak（T-SD）were detected by 2D-STI in three groups of A（with isolated LBBB,LVEF≥50%,20cases）,B（LBBB patients combined with heart failure,LVEF〈50%,20cases）and C（healthy controls,25cases）.Results GLPS,GLPS-endo and T-SD in groups of A and B were worse than those in group C,and GLPS-epi in group B was worse than that in group C as well（P〈0.01）.But GLPS,GLPS-epi,GLPS-endo and T-SD in group A were better than those in group B（P〈0.01）.Conclusion 2D-STI can be used to evaluate left ventricular myocardial strain in LBBB patients.GLPS-endo is a sensitive parameter to reflect illness status.

关 键 词：二维斑点追踪成像技术 左束支传导阻滞 心肌应变 

分 类 号：R445[医药卫生—影像医学与核医学]