Refers to the time taken for color to return to an external capillary bed after pressure is applied to cause blanching.
CRT is measured by holding a hand higher than heart-level and pressing the soft pad of a finger or fingernail until it turns white, then taking note of the time needed for the color to return once pressure is released.
Normal capillary refill time is usually less than 2 seconds.
In newborn infants, capillary refill time is 3 seconds. and can be measured by pressing on the sternum for five seconds with a finger or thumb.
A prolonged capillary refill time may be a sign of shock, dehydration, decreased peripheral perfusion. and peripheral artery disease.
The test is affected by many different external factors.
Refers to the time taken for color to return to an external capillary bed after pressure is applied to cause blanching.
CRT is measured by holding a hand higher than heart-level and pressing the soft pad of a finger or fingernail until it turns white, then taking note of the time needed for the color to return once pressure is released.
Normal capillary refill time is usually less than 2 seconds.
In newborn infants, capillary refill time is 3 seconds. and can be measured by pressing on the sternum for five seconds with a finger or thumb.
A prolonged capillary refill time may be a sign of shock, dehydration, decreased peripheral perfusion. and peripheral artery disease.
The test is affected by many different external factors.