What is the average procedural success rate for LAAO?

The average procedural success rate for Left Atrial Appendage Occlusion (LAAO) is typically reported to be over 90%. This high success rate reflects the efficacy of the LAAO procedures in safely occluding the left atrial appendage, which can significantly reduce the risk of thromboembolic events, particularly in patients with atrial fibrillation who are at a high risk for stroke.

Factors contributing to this high rate of success include the advancements in procedural techniques, improved device technology, and experienced operators who can navigate the complexities of the anatomy involved. A success rate exceeding 90% indicates that most procedures achieve their goal of effective appendage closure, thereby minimizing the risk factors associated with atrial fibrillation without the need for long-term anticoagulation therapy.

In contrast, a success rate under 80% or around 85% would not accurately represent the current performance metrics of LAAO interventions in clinical practice, where outcomes have consistently shown robust effectiveness. Hence, the choice that states over 90% success aligns with the most current clinical data and practice guidelines.