Author + information
- Xiaoxia Wu,
- Yuezhi Meng,
- Fengyu Zhang and
- Dongxing Ma
To investigate the application value of left atrial appendage (LAA) angiography combined with TEE in the analysis of the morphology and size of LAA.
Before underwent the angiography of LAA, all 38 patients were performed with TEE test. TEE Images ware analyzed by 2 experienced echocardiogram experts separately to measure the max diameter of LAA orifice, the depth of LAA and to classify the morphology of LAA into 4 types: chicken wing, cactus, windsock and cauliflower. The parameters mentioned above were measured by LAA angiography too.
The maximum diameter of LAA orifice measured in LAA angiography was (18.8±3.9)mm. In TEE, the 2 separate observers' measurement results were (17.8±3.8)mm and (18.6±4.0)mm, respectively. And the correlation coefficients with LAA angiography were 0.90 and 0.98 (p<0.01). The depth of LAA measured in LAA angiography was (25.5±5.7)mm. In TEE, the 2 separate observers' measurement results were (26.5±6.1)mm and (26.5±5.9)mm, respectively. And the correlation coefficients with LAA angiography were 0.93 and 0.92 (p<0.01). The TEE measurement of the max diameter of LAA orifice and the depth of LAA exhibited a high level of agreement at Bland-Altman plot analysis with the angiography measurement. To classify the LAA morphology of all 38 cases with LAA angiography, the chicken wing type was the most common (39.5%), followed by cactus type (28.9%), windsock type(18.4%), and cauliflower type(13.2%). Among them, 35 cases were consistent with TEE, and the consistency was 92.1%.
LAA angiography combined with TEE is more useful to observe the LAA size and anatomy, and the measurement is accurate and reliable.