Left Atrial Function Changes After Left Atrial Appendage Closure in Patients With Persistent Atrial Fibrillation

Left atrial appendage closure is performed using a single endocardial plug devices guided by fluoroscopic guidance and transesophageal echocardiography

Each patient with persistent AF receives circumferential pulmonary vein isolation under the 3D electro-anatomical mapping system , and no additional ablation is performed in the extrapulmonary sites unless the patient is diagnosed with atrial flutter before the operation.

Each patient received the same group of patients with simple radiofrequency ablation radiofrequency ablation treatment at the same time, the transcatheter occlusion of left atrial appendage opening