The nurse performs Allen's test before obtaining an ABG specimen to determine
A) if an allergy to heparin is present.
B) if ulnar circulation is adequate.
C) the patency of the radial artery.
D) the presence of neuromuscular weakness.

Question

Quizplus · Accepted Answer

Before radial puncture to obtain ABG specimens, Allen's test should be performed to ascertain adequate ulnar circulation. Failure to assess ulnar circulation could result in ischemic injury to the client's hand.

The Nurse Performs Allen's Test Before Obtaining an ABG Specimen