二维斑点追踪自动功能成像收缩后缩短对缺血伴非阻塞性冠状动脉疾病的诊断价值  

Diagnosis of Two-Dimensional Speckle Tracking Automatic Functional Imaging of Postsystolic Shortening in Ischemia with Non-Obstructive Coronary Arteries

作　　者：李颖[1] 孙丹丹 秦智妍 杨宇慧 张慧慧 丁明岩[1] 赵含章[1] LI Ying;SUN Dandan;QIN Zhiyan;YANG Yuhui;ZHANG Huihui;DING Mingyan;ZHAO Hanzhang(Department of Cardiac Function,the People's Hospital of Liaoning Province,the People's Hospital of China Medical University,Shenyang 110016,China)

机构地区：[1]辽宁省人民医院中国医科大学人民医院心功能科,辽宁沈阳110016

出　　处：《中国医学影像学杂志》2024年第10期1000-1004,1006,共6页Chinese Journal of Medical Imaging

基　　金：国家自然科学基金面上项目(82371982);辽宁省自然科学基金(2021-MS-063);辽宁省应用基础研究计划项目(2023JH2/101300067);沈阳市中青年科技创新计划(RC220223)。

摘　　要：目的探讨收缩后缩短对缺血伴非阻塞性冠状动脉疾病(INOCA)患者的诊断价值。资料与方法选取2020年5月—2022年12月辽宁省人民医院临床诊断为INOCA的患者85例,依据经胸腺苷负荷超声心动图,获得用药前后左前降支远端舒张期平均血流速度之比即冠状动脉血流速度储备(CFVR)并分为两组:CFVR<2.0为冠状动脉微血管功能障碍(CMD)组(n=40),CFVR≥2.0为对照组(n=45)。所有入组对象测量常规超声心动图参数左心室舒张末期内径指数(LVEDDI)、左心室舒张末期容积指数(LVEDVI)、左心室收缩末期容积指数(LVESVI)、左心室射血分数(LVEF)、二尖瓣舒张早期、晚期血流速度(E、A)、E/A、二尖瓣环侧壁与室间隔侧舒张早期运动速度平均值(e’)、E/e’,同时应用二维斑点追踪自动成像测得左心室整体纵向应变(GLS)和收缩后指数(PSI)。观察两组间超声心动图参数和超声新技术测得参数的差异。分析CMD组CFVR与PSI的关系。结果对照组与CMD组的LVEDDI、LVEDVI、LVESVI、LVEF、E、A、E/A、e’、E/e’和GLS差异均无统计学意义(t=-0.577~1.472,P>0.05),而PSI升高差异有统计学意义(t=-5.370,P<0.05);CMD组CFVR与PSI有良好的相关性(r=-0.486,P<0.05);受试者工作特征曲线显示PSI对CMD预测的曲线下面积为0.768,敏感度为68.0%,特异度为77.8%。结论PSI在评价INOCA患者左心室收缩功能方面有较好的应用价值,可早期发现此类患者左心室收缩功能损伤。Purpose To investigate the diagnostic value of postsystolic shortening in ischemia with non-obstructive coronary arteries(INOCA).Materials and Methods A total of 85 INOCA patients admitted to People's Hospital of Liaoning Province from May 2020 to December 2022 were selected and divided into two groups according to the ratio of distal diastolic average blood velocity of left anterior descending branch before and after treatment obtained by thymosidine load echocardiography(coronary flow velocity reserve,CFVR):CFVR<2.0 was in the coronary microvascular dysfunction(CMD)group(n=40),and CFVR≥2.0 was in the control group(n=45).Conventional echocardiographic parameters of all enrolled subjects were measured:left ventricular end-diastolic diameter index(LVEDDI),left ventricular end-diastolic volume index(LVEDVI),left ventricular end-systolic volume index(LVESVI),left ventricular ejection fraction(LVEF),early and late mitral valve diastolic blood flow velocity(E,A),E/A,average velocity of mitral valve annulus and interventricular septum in early diastolic(e')and E/e'on the wall and septal side were measured.The global longitudinal strain(GLS)and the post systolic index(PSI)of the left ventricle were measured by two-dimensional speckle tracking automated functional imaging.The differences of echocardiographic parameters,GLS and PSI between CMD group and control group were observed.The relationship between CFVR and PSI in CMD group was analyzed.Results There were no significant differences in LVEDDI,LVEDVI,LVESVI,LVEF,E,A,E/A,e',E/e'and GLS between control group and CMD group(t=-0.577-1.472,P>0.05).There was a statistically significant difference in PSI increase between CMD group and control group(t=-5.370,P<0.05).There was a good correlation between CFVR and PSI in CMD group(r=-0.486,P<0.05).The receiver operator characteristic curve showed that the area under the curve predicted by PSI for CMD was 0.786,the sensitivity was 68.0%,and the specificity was 77.8%.Conclusion PSI has good application value in evaluating left

关 键 词：超声心动描记术 应激 超声心动描记术 多普勒 冠状动脉疾病 血流储备分数 心肌 收缩后收缩 

分 类 号：R541.4[医药卫生—心血管疾病] R445.1[医药卫生—内科学]