If capillary refill time is longer than 2 seconds, what does this indicate?

• A. Normal peripheral perfusion
• B. Mild dehydration
• C. Impaired peripheral perfusion
• D. Hypervolemia

Answer: (C)

Capillary refill time is a quick check of peripheral blood flow. When you press on a nail bed and release, the color should return within about 2 seconds. If it takes longer than 2 seconds, peripheral perfusion is impaired—the tissues in the extremities aren’t getting blood back quickly enough. This points to reduced blood flow to the skin and tissues, which can occur with circulatory compromise or dehydration affecting circulating volume. Hypervolemia wouldn’t be indicated by a slow refill. Remember that environment and technique can affect measurements, but the main idea is that a refill over 2 seconds signals impaired peripheral perfusion.