NCLEX RN Practice Questions PDF Related

Review NCLEX RN Practice Questions PDF related questions and content

A client scheduled for a carotid endarterectomy requires insertion of an intra-arterial blood pressure-monitoring device. The nurse plans to perform the Allen test. Which observation indicates patency of the ulnar artery?

  • A. Blanching of the hand on compression and release of the ulnar artery
  • B. Muscular twitching of the bicep muscle with use of a tourniquet at the wrist
  • C. Hand turning pink after the nurse releases the pressure on the ulnar artery
  • D. Flexion of the wrist when tapping the ulnar artery with a reflex hammer
Correct Answer: C

Rationale: The Allen test assesses collateral circulation. The hand turning pink after releasing ulnar artery pressure indicates patency, ensuring adequate blood flow if the radial artery is cannulated.