What vital aspects are measured in LAA using TEE?

In the context of assessing the left atrial appendage (LAA) using transesophageal echocardiography (TEE), the measurement of os, depth, and landing zone is particularly vital. These aspects are crucial for determining the suitability for left atrial appendage occlusion (LAAO) procedures.

The os refers to the orifice of the LAA, which is important for understanding the opening through which the occlusion device will be deployed. Measuring the depth provides insight into how far the LAA extends, which is important for ensuring that the occlusion device fully covers the appendage to prevent stroke due to thrombus formation. The landing zone is the area within the LAA where the device will engage; knowing its size and shape is essential for selecting the appropriate device and ensuring optimal placement.

These measurements collectively inform the procedural approach and enhance the safety and efficacy of LAAO interventions, helping to mitigate the risk of complications and improve patient outcomes.