Which aspect does NOT typically factor into the evaluation of LAAO effectiveness?

The effectiveness of Left Atrial Appendage Occlusion (LAAO) is primarily evaluated based on its ability to reduce the incidence of strokes and systemic embolisms that can arise due to atrial fibrillation. The primary purpose of LAAO is to block the left atrial appendage where thrombus formation is most likely to occur in patients with atrial fibrillation.

Stroke incidence rates are a crucial measure, as they indicate the procedure's success in preventing thromboembolic events, which is one of the main therapeutic goals of LAAO. Imaging studies are also essential, as they help assess the anatomical suitability of the left atrial appendage for occlusion and to verify the complete closure of the appendage post-procedure. Monitoring for bleeding incidents during procedures is important for safety and to understand the procedural risks involved, but not directly tied to the long-term effectiveness of LAAO itself in reducing strokes.

In contrast, rates of heart attacks are not typically considered in evaluating LAAO effectiveness. The focus is more on the prevention of strokes specifically related to the left atrial appendage rather than myocardial infarction risks, which are influenced by different underlying cardiovascular conditions. Therefore, while heart attack rates are significant in a broader cardiovascular context,