Left Atrial Appendage Closure or Medical Therapy in Atrial Fibrillation

The study aimed to determine whether catheter-based closure of the left atrial appendage is noninferior to physician-directed best medical care for stroke prevention in patients with atrial fibrillation at high risk for stroke and bleeding. After a median follow-up of three years, the results indicated that left atrial appendage closure did not demonstrate noninferiority compared to medical therapy regarding the composite endpoint of stroke, systemic embolism, major bleeding, or cardiovascular death. Thus, the findings suggest that left atrial appendage closure may not be a superior alternative to standard medical management in this patient population.