Adult Echocardiography Practice Exam

During stress echocardiography, if the inferior wall is rated one and the lateral wall is rated four, how is the lateral wall described?

1. Hypokinetic

2. Hyperkinetic

3. Normal

4. Dyskinetic

The correct answer is: Hyperkinetic

In the context of stress echocardiography, the rating assigned to the walls of the heart reflects their function during the stress test. When the inferior wall is rated as one, it indicates a severely reduced movement or contraction, suggesting hypokinesis or poor performance. Conversely, a score of four for the lateral wall indicates that this area is moving more vigorously than normal. In this scenario, the lateral wall is described as hyperkinetic due to its high rating of four, which signifies that it is contracting more forcefully than expected during physical stress. Hyperkinesia refers to increased motion or activity of the myocardial wall segment compared to baseline or normal function. A hyperkinetic wall isn't just functioning adequately; it demonstrates enhanced function, often in response to increased demand during stress. This differentiation is crucial in clinical practice as it helps to identify areas of the heart that may be receiving good perfusion and function, contrasted with other regions that may be compromised. In summary, the elevated motion of the lateral wall during stress echocardiography leads to its characterization as hyperkinetic.