Procedure planning
Patients underwent a series of preoperative examinations including
relevant laboratory tests, 12-lead electrocardiogram (ECG),
transthoracic echocardiography (TTE), transesophageal echocardiography
(TEE) and CCTA. CCTA and TEE images were routinely acquired to
measure the maximum diameter of LAA
orifice and exclude LA or LAA thrombus.