Comparison of Outcomes After Left Atrial Appendage Closure or Oral Anticoagulation in Patients With Atrial Fibrillation

"A clinical sweep follow up will be performed in all patients of both groups and results will be analyzed. It will be in form of a standardized questionnaire and if necessary telephone interviews asking about thrombo-embolic events, stroke, death, any bleeding but also on their current medication, comorbidities (i.e. arterial hypertension, diabetes mellitus, renal impairment and liver disease), any hospitalizations and their quality of life. For all events, the source documents will be gathered from general physicians, cardiologists, hospitals or registry offices.~The questionnaire will be sent by mail to the patients. If information is missing or unclear, patients and if necessary their treating physician will be contacted by phone."