What is the best method to use for increasing blood flow for capillary punctures?
a. Apply a warm cloth to the site.
b. Apply ice to the site.
c. Apply a tourniquet just above the intended site.
d. Have the patient jump up and down.
ANS: A
The site for capillary puncture may be warmed using a warm, moist washcloth or a commercial warmer; it should be warmed to a temperature of no more than 42° C and for no longer than 2 to 5 minutes. Warming can increase the blood flow sevenfold. Exercise immediately before obtaining blood can invalidate a number of different tests, including white count and muscle enzymes.
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