Percutaneous left occlusion has been recommended for stroke prevention in patients with nonvalvular heart disease atrial fibrillation who are at high risk of stroke and cannot tolerate long-term anticoagulation therapy.Transthoracic and transesophageal echocardiography not only play an important role in patients selection before percutaneous left atrial appendage occlusion

the shape and size observation on the left atrial appendage

intraoperative occluder selection and real-time monitoring during the placement processing

but also facilitate the evaluation on postoperative occluder location and cardiac function.Transesophageal echocardiography has become an indispensable intraoperative imaging monitoring method.This paper reviews the application progress of echocardiography in percutaneous left auricular occlusion in patients with nonvalvular atrial fibrillation.