A normal capillary refill time (CRT) is which of the following?

A normal capillary refill time (CRT) is which of the following?

• A. 3-4 seconds
• B. 5+ seconds
• C. 4-5 seconds
• D. 1-2 seconds

Answer: (D)

Measuring capillary refill time assesses peripheral perfusion. After pressing on a mucous membrane (like the gums) until it blanches and then releasing, you watch how quickly color returns. Normal animals typically refill within about 1 to 2 seconds, so the 1-2 seconds option is the best choice. If refill is longer than ~2 seconds, it can indicate reduced peripheral perfusion from issues like shock, dehydration, hypovolemia, cold environment, or vasoconstriction. For accuracy, perform the test on mucous membranes rather than furred skin, and be aware that small species differences and temperature can affect readings.

Measuring capillary refill time assesses peripheral perfusion. After pressing on a mucous membrane (like the gums) until it blanches and then releasing, you watch how quickly color returns. Normal animals typically refill within about 1 to 2 seconds, so the 1-2 seconds option is the best choice. If refill is longer than ~2 seconds, it can indicate reduced peripheral perfusion from issues like shock, dehydration, hypovolemia, cold environment, or vasoconstriction. For accuracy, perform the test on mucous membranes rather than furred skin, and be aware that small species differences and temperature can affect readings.