Which artery involved in arterial blood gases does the nurse evaluate by using the Allen test?
1. Ulnar artery
2. Radial artery
3. Femoral artery
4. Popliteal artery
1
1. The nurse evaluates the ulnar artery perfusion of the client's hand before obtaining an arterial blood gas specimen from the client's radial artery.
2 and 3. The radial artery and femoral artery are suitable vessels for blood gas speci-mens, but the Allen test does not evaluate these arteries.
4. The popliteal artery is unsuitable for arterial blood gas specimens.
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