Left Atrial Appendage Closure With WATCHMAN FLX Device in Recurrent Gastrointestinal Bleeding: The GI-FLX Registry

Inclusion Criteria: * All male and female patients who are \> 18 years of age * Have Atrial Fibrillation * Have CHADS2VASc \> 2 * Have history of GI bleeding OR hospital admission that required blood transfusion OR emergency room visit requiring stopping of OAC OR outpatient 2 gm of Hgb drop from baseline, with or without evidence of upper or lower GI bleeding and requiring endoscopic procedure with holding of OAC. * Ability to understand study procedures and to comply with them for the entire length of the study. Exclusion Criteria: * Inability or unwillingness of individual to give written informed consent. * Other indications for OAC like deep vein thrombosis (DVT) or Pulmonary embolism (PE) or mechanical heart valve. * Patient who is pregnant will be excluded (Pregnancy will be excluded by checking urine beta-HCG). * Patient not following up with our practice / clinic after the procedure