Why is the radial artery the preferred site for arterial blood sampling?
1. It is near the surface and easy to palpate and stabilize.
2. The ulnar artery normally provides good collateral circulation.
3. The radial artery is not near any large veins.
4. It is the largest artery located in the upper extremities.
a. 1 and 4 only
b. 3 only
c. 2 and 4 only
d. 1, 2, and 3 only
ANS: D
The radial artery is the preferred site for arterial blood sampling for the following reasons:
• It is near the surface and relatively easy to palpate and stabilize.
• Effective collateral circulation normally exists in the ulnar artery.
• The artery is not near any large veins.
• The procedure is relatively pain free.
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