Ryanair Initial Practice Exam

Which of the following indicates good circulation when checking a casualty?

1. Pulse is weak

2. Skin is cold and clammy

3. Capillary refill takes less than 2 seconds

4. Eyes are closed

The correct answer is: Capillary refill takes less than 2 seconds

Capillary refill taking less than 2 seconds is an important indicator of good circulation in a casualty. This test measures the time it takes for blood to return to capillaries after they have been temporarily compressed, usually by pressing on a fingernail or the skin of the forearm. When the color returns promptly (within 2 seconds), it suggests that the blood is circulating effectively, indicating that the body's tissues are receiving an adequate supply of oxygenated blood. This physiological response is crucial in assessing peripheral circulation, especially in situations where the casualty may be experiencing conditions that affect blood flow or may be in shock. An abnormal capillary refill time that exceeds 2 seconds could signify poor circulation, which might require urgent medical intervention. In contrast, a weak pulse suggests reduced blood flow and potentially poor circulation, cold and clammy skin could indicate shock or hypoperfusion, and closed eyes do not provide sufficient information about a person’s circulation or overall condition, as they do not directly reflect cardiovascular status. Therefore, a capillary refill time of less than 2 seconds serves as a reliable indicator of good circulation.