What type of LAA shape has the highest association with stroke risk?

The "Swan" shape of the left atrial appendage (LAA) is associated with a higher risk of stroke due to its anatomical characteristics that create a more favorable environment for the formation of thrombi. This configuration can lead to turbulent blood flow and stagnation, which are significant contributors to the development of blood clots.

In contrast, other shapes, such as the "Chicken wing," are generally associated with more favorable hemodynamic profiles that reduce the risk of thrombus formation. The chicken wing shape often allows for more effective blood flow, thereby decreasing the likelihood of strokes associated with LAA. Understanding these anatomical differences is crucial for assessing stroke risk in patients with atrial fibrillation, as they inform clinical decisions regarding LAA occlusion interventions.