Document Detail

Normative cross-sectional area of the brachial plexus and subclavian artery using ultrasonography.
MedLine Citation:
PMID:  19748408     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Ultrasonography has been used to measure the cross-sectional area (CSA) of peripheral nerves, but the CSA of the brachial plexus has not previously been reported. The purpose of this study was to establish a reference range of values for the CSA of the brachial plexus, subclavian artery, and peak systolic velocity (PSV) of the subclavian artery in healthy subjects using ultrasonography. METHODS: Thirty-two asymptomatic subjects (19 men, 13 women) from a chiropractic college with an average age of 29.5 +/- 9.6 participated in the study. The brachial plexus and subclavian artery CSA were measured at 3 locations: interscalene, first rib, and infraclavicular. The PSV of the subclavian artery was measured in both supraclavicular and infraclavicular locations. Each subject was imaged bilaterally. Means and 95% confidence intervals were calculated. Interexaminer reliability was evaluated between 2 examiners on 15 randomly selected subjects. RESULTS: The average CSA for the brachial plexus at the interscalene space, first rib, and infraclavicular location was 0.75 +/- 0.05, 0.96 +/- 0.07, and 0.98 +/- 0.07 cm(2), respectively. The average CSA for the subclavian artery at the same locations was 0.35 +/- 0.03, 0.38 +/- 0.03, 0.35 +/- 0.03 cm(2), respectively. The average subclavian artery PSV in supraclavicular and infraclavicular locations was 98 +/- 8 and 93 +/- 7 cm/s, respectively. The overall interexaminer reliability was poor at 0.39 (0.20-0.55). CONCLUSIONS: This is the first study to obtain normative CSA measurements of the brachial plexus and subclavian artery in multiple locations of the thoracic outlet as well as interexaminer reliability data. These data may be beneficial in future studies designed to assess the brachial plexus and subclavian artery in patients with thoracic outlet syndrome.
Daniel W Haun; John C S Cho; Thomas B Clark; Norman W Kettner
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of manipulative and physiological therapeutics     Volume:  32     ISSN:  1532-6586     ISO Abbreviation:  J Manipulative Physiol Ther     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-14     Completed Date:  2010-01-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7807107     Medline TA:  J Manipulative Physiol Ther     Country:  United States    
Other Details:
Languages:  eng     Pagination:  564-70     Citation Subset:  IM    
Department of Radiology, Logan College of Chiropractic, Chesterfield, MO 63006-1065, USA.
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MeSH Terms
Brachial Plexus / anatomy & histology*,  ultrasonography*
Cohort Studies
Confidence Intervals
Reference Values
Reproducibility of Results
Subclavian Artery / anatomy & histology*,  ultrasonography*
Ultrasonography, Doppler
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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