Why is the Allen test performed before placement of a radial arterial line placement?
A) To evaluate collateral circulation to the hand
B) To estimate patency of the radial artery
C) To appraise the neurologic function of the hand
D) To assess the sensitivity of the insertion point

Question

Quizplus · Accepted Answer

The Allen test involves occluding the radial or ulnar artery after blanching the hand.If the hand turns pink,then the nonoccluded artery provides enough circulation to the hand.If the hand remains blanched,then no collateral circulation exists,and that wrist should not be used for arterial line placement.

Why Is the Allen Test Performed Before Placement of a Radial