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The aim of study is to evaluate the structure and function of the left atrial and left ventricle of the patients with atrial fibrillation after percutaneous left atrial appendage occlusion by transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE).
18 patients with atrial fibrillation were enrolled. TTE and TEE were reviewed to observe the stability of the occluder and to measure left atrial diameter, left ventricular diameter, left ventricular ejection fraction, volume of mitral regurgitation, mitral diastolic blood flow velocity and upper left pulmonary vein blood flow velocity at different pre-operation and post-operation time.
The position and morphology of occluder in 18 patients were all well placed with post-operation follow-up. The occluder did not produce any pressing signs against peripheral adjacent structure, and there was also no thrombosis in the surface of the occluder. There were residual shunt width less than 3mm around occluder in 4 patients. Left atrial diameter, left ventricular diameter, left ventricular ejection fraction, upper left pulmonary vein blood flow velocity, volume of mitral regurgitation, mitral diastolic blood flow velocity showed no significance difference(P>0.05) at different post-procedure time.
TTE and TEE play an important role in evaluating the structure and the function of the left atrial and left ventricle in percutaneous left atrial appendage occlusion.