Adson's test


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Related to Adson's test: thoracic outlet syndrome, Adson's maneuver

Adson's test

 [ad´sunz]
a test for thoracic outlet syndrome; with the patient in a sitting position, the hands resting on the thighs, the examiner palpates both radial pulses as the patient rapidly fills the lungs by deep inhalation and, holding the breath, hyperextends the neck and turns the head toward the affected side. If the radial pulse on that side is decidedly or completely obliterated, the result is positive.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Adson Test

A clinical test for thoracic outlet syndrome which is based on a reduction or obliteration of the radial artery pulse with compression at the interscalene triangle.
Technique The examiner palpates the radial pulses of a seated patient whose hands are on his thighs. The patient then takes a deep breath, holds it, then hyperextends his neck, turning his head, first to one side, then the other; the side on which the radial pulse decreases or disappears—due to compression of the subclavian artery between the pectoralis minor and the chest wall—is the one affected by thoracic outlet syndrome.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
Assessment of neurologic and vascular integrity produced positive Wright's and Adson's tests, but a negative Halstead's test.
The following orthopaedic tests were performed and found to be negative (bilaterally where applicable): Cervical compression, cervical distraction, Cervical Kemps test (active full extension and rotation), Speeds test (patients shoulder flexed to 90 degrees and resists extension at the shoulder), Valsalva's manoeuvre, Roo's test (shoulder flexed and abducted to 90 degrees and elbow bent to 90 degrees - hold position up to 2 minutes), Adson's test (while palpating the radial pulse the upper extremity is put into abduction and extension with external rotation-patient is instructed to rotate the head to the side of involvement, take a deep breath and hold it).