RecruitingClinical trialLong-Term Outcomes of LAA Contrast Flow in CT Scans After Endocardial LAA Closure: The CF-CT RegistryThis study is intended to assess the incidence and correlation to the development of peri-device leaks (PDLs), device related thrombosis (DRTs) and cerebral vascular accident (CVA)/transient ischemic attacks (TIAs) in association with left atrial appendage contrast flow (LAA-CF). It will be a multi-center, retrospective study. Approximately 100 subject charts will be reviewed.