应用速度向量成像及定量组织速度成像技术评价左心室舒张功能  

Evaluation of left ventricular diastolic function using velocity vector imaging and quantitative tissue velocity imaging

作　　者：张川[1] 查道刚[1] 刘伊丽[1] 王鹏[1] 侯玉清[1] 修建成[1] 王月刚[1] 周忠江[1] 

机构地区：[1]南方医科大学南方医院心血管内科,广州510515

出　　处：《中华心血管病杂志》2009年第11期1026-1029,共4页Chinese Journal of Cardiology

摘　　要：目的以左心室舒张末压（LVEDP）为标准，探讨速度向量成像（VVI）与定量组织速度成像（QTVI）技术各参数在评价左心室舒张功能中的应用价值。方法51例接受心导管检查的患者纳入研究。介入诊疗前，使用超声心动图测量二尖瓣舒张早期血流速度（E峰）、舒张晚期血流速度（A峰）、E／A比值、左室射血分数；应用VVI及QTVI分别测算二尖瓣环舒张早期平均峰值运动速度（Em），计算E／Em值。介入术中，使用猪尾导管测量LVEDP。结果VVI及QTVI测算的E／Em均与LVEDP呈良好的线性相关，相关系数分别为：r=0．808，P〈0．01及r=0．692，P〈0．01；两相关系数比较，前者高于后者（Z=2．246，P=0．025）。VVI及QTVI测算的Em均与LVEDP呈良好的负相关，相关系数分别为：r=-0．740，P〈0．01及r=-0．567，P〈0．01；两相关系数比较，前者高于后者（Z=2．595，P=0．009）。常规二维超声心动图测定的E／A值和LVEDP相关性差（r=0．117，P=0．415）。结论VVI作为一种新的超声诊断新技术，在评价左心室舒张功能上优越于QTVI。E／Em及Em均可用于评价左心室舒张功能，前者与LVEDP相关性较高，但二者差异尚无统计学意义（P〉0．05）。Objective To validate the efficacy of velocity vector imaging （VVI） and quantitative tissue velocity imaging （QTVI） for evaluating left ventricular diastolic function. Methods Fifty-one patients underwent left heart catheterization were included in this study. Mean of peak early diastolic velocity （Em） ,EF and the ratio of early （E） to late （A） mitral valve flow velocity （E/A） were measured by echocardiography and the ratio of E to Em （E/Em） was calculated. Left ventricular end diastolic pressure （LVEDP） was measured during catheterization examination. Results E/Em derived from VVI or QTVI was significantly correlated with LVEDP（ r = 0. 808, P 〈 0. 01 and r = 0. 692, P 〈 0. 01, respectively） and the correlation coefficient between VVI and LVEDP was significantly higher than that between QTVI and LVEDP （Z =2. 246, P = 0. 025）. Em derived from VVI and QTVI also negatively correlated with LVEDP （r = - 0. 740, P 〈 0. 01 and r = - 0. 567, P 〈 0. 01 ） and the correlation coefficient between VVI and LVEDP was significantly higher than that between QTVI and LVEDP （Z =2. 595, P =0. 009）. However, there was no correlation between E/A and LVEDP （ r = 0. 117, P = 0. 415 ）. Conclusion E/Em and Em derived from VVI and QTVI are valuable parameters for evaluating LV diastolic function.

关 键 词：超声心动描记术 心室功能 左 

分 类 号：R686[医药卫生—骨科学]