多平面经食管超声评价左心耳功能及左心耳血栓

目的： 评价左心耳功能对左心血栓形成的影响。方法： 应用多平面经食管超声对１２ 例左心耳血栓或左心耳伴左房血栓 （血栓组） 和２０ 例无左心耳、左房血栓 （无血栓组） 患者进行检查。分别测量两组患者的左心耳开口宽度 （ＬＡＡＷ ）、长度 （ＬＡＡＬ）、宽度／长度 （ＬＡＡＷ ／ＬＡＡＬ）、左心耳面积 （ＬＡＡＡ）、充盈速度 （ＦＶ）、射血速度（ＥＶ）、充盈速度／射血速度（ＦＶ／ＥＶ）及观察左心耳彩色血流充盈情况并进行比较。结果：血栓组ＬＡＡＷ 、ＬＡＡＬ、ＬＡＡＷ ／ＬＡＡＬ 和ＬＡＡＡ 显著增大， Ｐ 值分别小于 ００００５、０００５、００５ 和 ０００５， ＦＶ 与 ＥＶ 明显减低， Ｐ 值均小于００００１。血栓组左心耳彩色血流充盈稀疏。结论： 左心耳功能减低是左心耳血栓形成的重要因素， 多平面经食管超声是检测左心耳血栓有价值的方法。

Assessment of Left Atrial Appendage Function and Thrombus by Multiplane Transesophageal Echocardiography

Objective:To detect left atrial appendage(LAA) function and thrombus formation prevalence with multiplane transesophageal echocardiography(MTEE).Methods:Twelve patients with left atrial appendage or/and left atrium thrombus and 20 patients without thrombus were prospectively studied.LAA width(LAAW),LAA length(LAAL),ratio of LAAW to LAAL LAA area(LAAA),filling velocity(FV),ejection velocity(EV),ratio of FV to EV and color flow image of LAA were measured by TEE.Results:LAAW,LAAL,ratio of LAAW to LAAL,LAAA were significantly increased, P <0 0005,0 005,0 05 and 0 005 respectively,FV and EV were significantly decreased, P both <0 0001,and color flow image was defected in thrombus group.Conclusion:Impaired LAA function is responsible for thrombus formation and multiplane TEE is a valuable method for its detection.