TDI等容收缩期参数评价冠心病节段性心内膜回声增强与心肌缺血关系  

Isovolumic Contraction Parameters of Tissue Doppler Imaging in Evaluation of Segmental High-Echo Endocardium of Coronary Artery Disease with Myocardial Ischemia

作　　者：马秀丽[1] 刘书丽[1] MA Xiuli;LIU Shuli(Department of Electric Diagnosis, The Fourth People’s Hospital of Shenyang, Shenyang Liaoning 110031, China)

机构地区：[1]沈阳市第四人民医院电诊科,辽宁沈阳110031

出　　处：《中国医疗设备》2017年第12期76-79,共4页China Medical Devices

摘　　要：目的应用脉冲组织多普勒(Pulsed-Wave Tissue Doppler Imaging,PW-TDI)测量冠心病左室节段性心内膜回声增强部位心肌运动速度,初步探讨其与心肌缺血的联系。方法应用超声心动图及PW-TDI技术检测27例下壁基底段心内膜回声增强病例组、18例后间隔基底段心内膜回声增强病例组及20例正常对照组常规二维超声测值及二尖瓣环速度及心肌运动速度,得到等容收缩期加速度(IVA)、等容收缩期峰值流速(IVV)、收缩期峰值流速(Sa)、舒张早期峰值流速(Ea)、舒张晚期峰值流速(Aa),并进行统计学分析。结果 3组间常规二维超声测值差异无统计学意义,反应左心室功能的PWTDI参数Aa增高,Ea减低,IVA减低,与对照组相比差异有统计学意义;Sa及IVV在各组间比较差异均无统计学意义。结论 PW-TDI等容收缩期参数可早期、无创检测冠心病节段性心内膜回声增强部位的心肌收缩功能的减低,提示存在心肌缺血。Objective To assess the segment myocardial function under the endocardium of high echo-intensity by using pulse wave tissue Doppler imaging(PW-TDI)derived indices,and to evaluate the relationship between these parameters and myocardial ischemia.Methods A total of27patients with high echo-intensity endocardium on inferior,18patients with high echo-intensity endocardium on posterior septum,and20normal controls detected by using TW-TDI technique were enrolled in this study.Conventional two-dimensional(2D)parameters of left heart and TDI derived systolic velocities of mitral annulus,including peak systolic velocity during ejection period(Sa),early diastolic peak velocity(Ea),late diastolic peak velocity(Aa),peak myocardial velocity during isovolumic contraction(IVV),and isovolumic myocardial acceleration(IVA)were measured and statistically analyzed.Results Conventional2D parameters of left heart had no statistical difference among3groups.The pulse tissue doppler parameters(Aa was increased,Ea and IVA were decreased)which could reflect the function of left ventricular were significanthy changed compared to that of control group.There was no significant difference of Sa and IVV among3groups.Conclusion Isovolumic contraction parameters of PW-TDI can be used to evaluate the myocardiol ischemia in patients with high echo-intensity endocardium early and noninvasively and can indicat myocardial ischemia.

关 键 词：心内膜 左心室 组织多普勒 超声心动图 

分 类 号：R730.41[医药卫生—肿瘤]