Picked up this via Dave Armstrongs blog: Finger-Squeezing Device to Improve Capillary Refill Time Tests Quote: Doctors measure “capillary refill time” by putting pressure on the fingernails and then watching the skin below go from white to red. It’s a way to assess hydration in patients, as well as to look for poor peripheral perfusion arising from other underlying conditions.
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Finger-Squeezing Device to Improve Capillary Refill Time Tests