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Capillary Refill Time

Overview

  • Capillary refill time is a marker of perfusion, and prolonged refill time suggests poor perfusion of the area being examined.
    • How to Elicit

    • Apply pressure to the nail bed until it blanches, release and measure the time taken for colour to return.
    • Abnormal If

    • >2 seconds
    • Causes of Prolonged Capillary Refill Time

    • Shock - cardiogenic, obstructive
    • Dehydration
    • Reduced peripheral perfusion
    • Note

    • Capillary refill time (CRT) is a useful test in children, though has little clinical utility in adults due to its variability with age, sex, ambient temperature among many other factors.
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Associated Diseases
BETA

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