Question

described on how you will perform allen test. (include the client position, description of test and positive sign.)

Explanation:

• Client position: The client is seated or supine with the arm in a neutral position.
• Description of test: The examiner occludes both the radial and ulnar arteries by applying firm pressure. The client makes a tight fist several times until the hand blanches (loses color). Then, pressure on either the radial or ulnar artery is released.
• Positive sign: If the hand rapidly regains color (within 5 - 7 seconds), it indicates that the non - occluded artery is providing adequate collateral circulation. If the hand remains blanched or takes longer to regain color, it may suggest occlusion or reduced blood flow in the non - occluded artery.

Answer:

Client is seated/supine with arm neutral. Examiner occludes radial and ulnar arteries. Client fists until blanching. Release one artery. Positive sign: rapid (5 - 7 sec) color return (adequate collateral); slow/no return (possible occlusion).