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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 TestA 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.