超声测定二尖瓣环运动评价心室舒张功能  

M-mode Analysis of Mitral Annulus Motion for Detection of Diastolic Function in Patients with Old Myocardial Infarction

作　　者：于东明[1] 李群[1] 王捷[1] 王炯[1] 李继红[1] 

机构地区：[1]北京天坛医院心内科，北京 100050

出　　处：《中国医学影像技术》2000年第12期1048-1050,共3页Chinese Journal of Medical Imaging Technology

摘　　要：目的　利用M型超声测定二尖瓣环运动 (MAM )评价左室舒张功能。方法　陈旧性心梗 (OMI)及正常人各 35例 ,记录二尖瓣环舒张早期和晚期M型运动曲线的下降幅度 (EM、AM )和斜率 (SM、SA)及二尖瓣口血流频谱。结果　OMI组的EM明显降低 (5 6 1± 1 32vs 8 82± 1 75 ,P <0 0 0 1) ,SE下降 (4 3 12± 14 10vs 73 92±2 1 44 ,P <0 0 0 1) ,EM /AM低 (1 0 6± 0 35 8vs 1 6 7± 0 44 ,P <0 0 0 1) ,EM及EM/AM与多普勒血流参数E/A具有相关 (r =0 6 79,P <0 0 0 1,r=0 6 38,P <0 0 0 1) ,以EM <6 93为标准判断有无舒张功能不全的敏感性和特异性分别为 97 14%和 91 43%。结论　MAM方法适用于无创评估OMI患者的左室舒张功能。Objective To define the role of mitral annulus motion (MAM) for detecting diastolic function in patients with old myocardial infarction. Methods Echocardiography were performed in 35 patients with myocardial infarction and 35 normal participants. The amplitude of early diastolic motion (EM) and later diastolic motion (AM),slope E (SE),slope A (SA) of the septal mitral annulus were derived from M\|mode analysis, the mitral inflow pattern were also obtained by pulsed Doppler. Results In the group with OMI, a significant reduction of EM (5.61±1 32 vs 8 82±1 75, P<0.001) and SE (43 12±14 10 vs 73 92±21 44, P <0 001) were detected. EM/AM decreased (1 06±0 36 vs 1 67±0 44, P <0 001).Using EM <6 93 mm as a cut points,sensitivity and specifivity for the detection of diastolic dysfunction were 97 14% and 91 43% respectively.There were significant relation between E/A and EM ( r =0 679, P <0 01),SE ( r =0 604, P <0 01),EM/AM ( r =0 638, P <0 01). Conclusion MAM may be a useful tool for assessing LV diastolic dysfunction in patients with OMI. [

关 键 词：超声心动图 陈旧性心肌梗塞 二尖瓣环运动 

分 类 号：R542.22[医药卫生—心血管疾病] R540.4[医药卫生—内科学]