Practice Question
with chronic obstructive pulmonary disease (COPD). The technician tells the nurse the Allen test is positive before the ABG is done. Which interpretation by the nurse is correct?
Answer Choices:
Correct Answer:
There is good blood flow in the ulnar artery.
Rationale:
✨ A positive Allen test means the hand flushes pink after releasing ulnar pressure.
✨ Indicates adequate collateral circulation via ulnar artery.
✨ Safe to perform radial artery puncture for ABG.
✨ Ensures that if radial artery is damaged, hand will still receive blood.
✨ Positive = normal finding.
Notify provider
✨ There is no emergency — this is a normal result.
Insufficient radial blood flow
✨ Negative test indicates poor ulnar flow, not radial issues.
Good femoral artery flow
✨ Allen test does not assess femoral artery.
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This question is from ATI Custom LPN Pharm II NSG 2310 Exam 2 Fall 2025 which contains 84 questions.
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From Exam
ATI Custom LPN Pharm II NSG 2310 Exam 2 Fall 2025
84 Questions
View Full Exam Start PracticingQuestion Details
- Category: LPN Nursing Exam(s)
- Subcategory: LPN ATI Exams
- Domain: Pharmacology
- Answer Choices: 4