Percentages are based on the number of patients with assessable echocardiographic data.
LAA = left atrial appendage.
↵⁎ Follow-up transesophageal echocardiography (TEE) exams were only required for the first 20 subjects enrolled in the study.
↵† The PLAATO (Percutaneous Left Atrial Appendage Transcatheter Occlusion) Study device was not assessable during the TEE exam.
↵‡ LAA occlusion grade was unreadable on the TEE exam or not recorded.