Echocardiography Techniques II Exam 1 Practice

What is the normal right atrial pressure?

5-10 mmHg 0-5 mmHg 10-15 mmHg 15-20 mmHg

Correct Answer:

0-5 mmHg

Explanation:

Normal right atrial pressure is about 0–5 mmHg. This reflects the preload of the right heart and corresponds to the central venous pressure in a healthy adult. In echocardiography, RAP is often estimated from the inferior vena cava: a small IVC with brisk inspiratory collapse supports a RAP in the 0–5 mmHg range, while a dilated IVC with little collapse suggests a higher RAP (often around 10–20 mmHg). Be aware that body position and ventilation can shift these values, so end-expiration in a resting, supine patient is the typical reference.

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