心脏舒张功能新指标E/Em的影响因素分析  

Evaluation of Effective Factors on Ratio of Early Transmitral Flow Velocities to Early Mitral Lateral Annulus(E/Em)as A Diastolic Function Index

作　　者：叶岚[1] 周长钰[1] 蔡金荣[1] 郑成环[1] 

机构地区：[1]天津医科大学第二医院心内科,天津心脏病学研究所,天津市300211

出　　处：《中国超声医学杂志》2007年第8期587-589,共3页Chinese Journal of Ultrasound in Medicine

基　　金：天津市高等学校科技发展基金项目(No.20020225)

摘　　要：目的分析正常人心脏舒张功能新指标E/Em的影响因素。方法正常查体人群共96例,按年龄分为4组(小于50岁组,50～59岁组,60～69岁组和大于等于70岁组),测量经二尖瓣舒张早期血流速度(E)、舒张晚期血流速度(A)、E/A、二尖瓣外环舒张早期运动速度(Em)、舒张晚期运动速度(Am)、Em/Am、计算E/Em以及年龄、性别、心率、二维超声结构参数和左室射血分数对其的影响。结果多元回归分析表明仅年龄对E/Em有影响(β=0.319,P=0.002),随着年龄的增长E/Em升高。结论老年人使用E/Em评估左室前负荷时应考虑年龄因素。Objective To evaluate the determinants on the ratio of early transmitral flow velocities to early mitral lateral annulus （E/Em） . Methods Totally 96 healthy patients （age range, 40=82） were divided into 4 age groups （（50, 50- 59, 60- 69, ≥70） years, Echocardiography included 2D echocardiography, PW-Dopplor imaging and PW-tissue Dopplor imaging. E, A, E/A, Em, Am, Em/Am; E/Em were obtained to evaluate their determinants. Results Multiple linear regression analysis of E/Em ratio inclined gradually with aging. E/Em was only effected by age （β=0. 319, P=0. 002） . Conclusions E/Em ratio was increased progressively along with age increasing. When we evaluate preload of LV with E/Em in the elder people, the factors of age-dependent cut-off value should be considered.

关 键 词：二尖瓣舒张早期流速E 二尖瓣外侧环舒张早期运动速度Em E/Em 舒张功能 

分 类 号：R445.1[医药卫生—影像医学与核医学]