A nurse performs Allen's test to evaluate the adequacy of circulation in the radial artery by:
1. asking the patient to relax the hand by the side.
2. compress only the ulnar artery to blanch the hand.
3. releasing pressure on both arteries at the same time.
4. color returning to hand indicates perfusion.
1
Allen's test is performed to evaluate circulation in the hand, both in the radial and the ulnar arteries. The patient is asked to make a fist. The nurse compresses both the ulnar and the radial artery to blanch the hand. The patient is asked to open the hand as the nurse releases pressure on one or the other of the arteries. Color returning to the hand confirms perfusion.
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