What is the average size range of the left atrial appendage in adults?

The average size range of the left atrial appendage (LAA) in adults is typically between 20 to 30 mm. This dimension is important for various clinical assessments, especially when considering procedures such as LAA occlusion. Understanding the size of the LAA helps healthcare professionals choose appropriate devices for interventions and predict potential complications. Variations in size can influence the approach to LAAO and other arrhythmia management strategies, particularly in patients with atrial fibrillation, where the LAA is a source of thrombus formation. Being aware of this size range is essential for making informed decisions regarding treatment options for patients.