Document Detail


Near-infrared spectroscopy and transcutaneous oxygen pressure during exercise to detect arterial ischemia at the buttock level: comparison with arteriography.
MedLine Citation:
PMID:  15944599     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Noninvasive tests are required to detect (in both male and female subjects and side by side) arteries toward the hypogastric circulation that are likely to present significant lesions as a cause of buttock claudication.
METHODS: We compared the accuracy of near-infrared spectroscopy (NIRS) and transcutaneous oxygen pressure (TCP o 2 ) on both buttocks during walking tests to detect lesions on the arteries toward the hypogastric circulation. NIRS was considered abnormal if recovery time to pre-exercise values was greater than 240 seconds for tissue oxygen saturation (absent data being coded 0), and TCP o 2 was coded abnormal if the minimal value of buttock changes minus chest changes was lower than -15 mm Hg. The study was conducted in a university hospital; there were 30 ambulatory patients with stage 2 claudication of the Fontaine classification.
RESULTS: Angiography showed 36 abnormal (stenosis > 75%) and 24 normal arterial axes toward the buttocks circulation. NIRS and TCP o 2 provided respectively 55% (range, 41.6% to 67.9%) and 82% (range, 69.6% to 90.5%) accuracy (95% confidence interval) to predict the presence of arteriographically proven lesions; P < .05.
CONCLUSIONS: Using available cut-off points proposed in the literature, NIRS showed a lower diagnostic accuracy than TCP o 2 for the prediction of lesions on the arterial tree to the hypogastric circulation. NIRS is a recent technique as compared with TCP o 2 , and its diagnostic accuracy might improve in the future. Currently, one should carefully weigh the advantages and limits of NIRS and TCP o 2 when a choice is to be made between them to monitor exercise-induced changes resulting from lower limb arterial disease at the proximal level.
Authors:
Philippe Bouyé; Vincent Jacquinandi; Jean Picquet; Francine Thouveny; Julien Liagre; Georges Leftheriotis; Jean-Louis Saumet; Pierre Abraham
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of vascular surgery     Volume:  41     ISSN:  0741-5214     ISO Abbreviation:  J. Vasc. Surg.     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-06-09     Completed Date:  2005-07-15     Revised Date:  2012-10-03    
Medline Journal Info:
Nlm Unique ID:  8407742     Medline TA:  J Vasc Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  994-9     Citation Subset:  IM    
Affiliation:
Laboratoire d'Explorations Vasculaires, Centre Hospitalier Universitaire, Angers, France.
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MeSH Terms
Descriptor/Qualifier:
Aged
Angiography
Blood Gas Monitoring, Transcutaneous*
Buttocks
Exercise Test*
Female
Humans
Ischemia / diagnosis*
Leg / blood supply*
Male
Middle Aged
Oxygen
ROC Curve
Sensitivity and Specificity
Spectroscopy, Near-Infrared*
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

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


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