Before collecting an arterial blood sample from the radial artery, which assessment is performed to check collateral hand circulation?
Correct answer: A. Allen test
- A. Allen test
- B. Romberg test
- C. Babinski test
- D. Brudzinski test
Explanation
The Allen test assesses whether the ulnar artery can supply the hand if radial circulation is reduced. The other tests assess neurological function and do not evaluate arterial collateral circulation.
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