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Updated: Jun 12, 2026

Transaxillary First Rib Resection for Treatment of the Thoracic Outlet Syndrome
Published on: September 13, 2020
Inter-arm arterial pressure difference caused by prone position in the thoracic outlet syndrome patient -A case
Seung Su Kim1, Soon Ho Cheong, Won Jin Lee
1Department of Anesthesiology and Pain Medicine, Paik Hospital, College of Medicine, Inje University, Busan, Korea.
Abstract:
Thoracic outlet syndrome has neurologic symptoms caused by compression of brachial plexus, blood vessel symptoms are caused by compression of the artery or vein. The authors report a case of sudden decrease in blood pressure of the left arm after turning the patient from supine position to prone position. They confirmed that the patient had thoracic outlet syndrome after performing computed tomography.
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Measurement of Blood Pressure
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Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure: