Advanced Cardiac Sonographer Practice Test 2025 — Complete Exam Prep

Question: 1 / 400

What is the normal left atrial appendage (LAA) emptying velocity?

Between 20 and 30 cm/sec

Greater than 50 cm/sec

The normal left atrial appendage (LAA) emptying velocity is greater than 50 cm/sec. This value is significant in the context of cardiac function and risk assessment, especially for conditions such as atrial fibrillation and thrombus formation. A higher emptying velocity indicates effective atrial contraction and emptying, which is crucial for maintaining proper blood circulation and reducing the risk of stagnant blood flow that can lead to clot formation.

LAA emptying velocity can be measured during echocardiographic assessments, and a value above 50 cm/sec typically correlates well with normal hemodynamic function. Knowing this threshold helps sonographers evaluate patients for potential left atrial appendage dysfunction or other underlying cardiac issues. Thus, maintaining an emptying velocity above this level is indicative of healthy left atrial function and can guide further clinical management or intervention if needed.

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Less than 10 cm/sec

About 75 cm/sec

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