Document Detail


Regions of arterial stenosis and clinical factors determining transcutaneous oxygen tension in patients with peripheral arterial disease.
MedLine Citation:
PMID:  20351469     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: Despite the clinical usefulness of transcutaneous oxygen tension (TcPO(2)) to assess the severity of limb ischemia, the factors determining TcPO(2) in patients with peripheral arterial disease (PAD) have not been fully clarified. We therefore examined the regions of arterial stenosis and clinical factors affecting lower-extremity TcPO(2).
METHODS: Resting TcPO(2) (REST-TcPO(2)) and postexercise TcPO(2) (Ex-TcPO(2)) in the calf region and the dorsalis pedis were measured simultaneously in 66 patients (132 limbs) with clinically suspected PAD, in whom angiography was also performed.
RESULTS: The peripheral arteries of the lower extremities were divided into five segments, and the impact of significant stenosis in each segment on ipsilateral TcPO(2) was evaluated by multiple regression analysis. In the calf region, significant stenosis of the proximal arteries (common-external iliac artery) revealed stronger involvement determining Ex-TcPO(2) than the peripheral segment (posterior tibial artery). In the dorsalis pedis, the peripheral segment (anterior tibial artery) more strongly determined Ex-TcPO(2) and REST-TcPO(2) than proximal segments. Age, creatinine, and diabetes were associated with REST-TcPO(2) of the calf region independent of arterial stenoses, while those of the dorsalis pedis were independently associated with age, and creatinine. In contrast, Ex-TcPO(2) in both regions was not independently associated with clinical factors, except for stenosis of the perfusing arteries.
CONCLUSION: The vascular lesions affecting TcPO(2) differ between the calf region (proximal > peripheral) and the dorsalis pedis (proximal < peripheral). In addition postexercise TcPO(2) is solely determined by stenosis of the perfusing arteries, while TcPO(2) at rest is affected by multiple clinical factors.
Authors:
Hiroki Ueno; Shinya Fukumoto; Hidenori Koyama; Shinji Tanaka; Takaaki Maeno; Masahiro Murayama; Yoshiko Otsuka; Yohei Mima; Yuji Kawaguchi; Tetsuo Shoji; Masaaki Inaba; Yoshiki Nishizawa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-30
Journal Detail:
Title:  Journal of atherosclerosis and thrombosis     Volume:  17     ISSN:  1880-3873     ISO Abbreviation:  J. Atheroscler. Thromb.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-09-06     Completed Date:  2011-01-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9506298     Medline TA:  J Atheroscler Thromb     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  858-69     Citation Subset:  IM    
Affiliation:
Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan.
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MeSH Terms
Descriptor/Qualifier:
Arterial Occlusive Diseases / physiopathology*
Blood Gas Monitoring, Transcutaneous*
Coronary Angiography
Female
Humans
Leg / blood supply*
Lower Extremity / blood supply*
Male
Middle Aged
Oxygen / blood*
Peripheral Vascular Diseases / physiopathology*
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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