Document Detail

Reactive hyperemia increases forearm vein area.
MedLine Citation:
PMID:  16873341     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To determine the effect of reactive hyperemia on human forearm vein area. METHODS: After obtaining ethics approval and informed consent, an automatic tourniquet was applied to the forearms of 20 healthy subjects for one, two, and three minutes, at pressures of 25 mmHg, 200 mmHg, then 25 mmHg. A blinded radiographer measured the cross-sectional area of the cephalic vein at the wrist using ultrasonography. Measurements were recorded prior to tourniquet application and every minute thereafter for ten minutes, at each pressure setting and each time interval. RESULTS: The mean vein cross-sectional area (mm2) increased from 8.22 +/- 3.09 to 10.77 +/- 3.50 after one minute of ischemia, from 8.31 +/- 2.78 to 10.61 +/- 2.77 after two minutes of ischemia, and from 8.39 +/- 3.34 to 10.94 +/- 3.46 after three minutes of ischemia (P < 0.05 for all). A tourniquet inflated to 25 mmHg for 13 min produced a mean vein cross-sectional area of 10.71 +/- 3.25 mm2. CONCLUSIONS: Reactive hyperemia causes human forearm vein cross-sectional area to increase. A low pressure tourniquet will also increase forearm vein area, but veins dilate more quickly during reactive hyperemia. This may have important clinical implications for attempting venous cannulation in patients with difficult venous access.
Heather L Mollison; William P S McKay; Rajesh H Patel; Stefan Kriegler; October E Negraeff
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Canadian journal of anaesthesia = Journal canadien d'anesthésie     Volume:  53     ISSN:  0832-610X     ISO Abbreviation:  Can J Anaesth     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-07-28     Completed Date:  2006-12-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8701709     Medline TA:  Can J Anaesth     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  759-63     Citation Subset:  IM    
Department of Anesthesia, University of Saskatchewan, Saskatoon, Canada.
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MeSH Terms
Anatomy, Cross-Sectional
Forearm / blood supply*
Hyperemia / pathology*
Ischemia / pathology
Single-Blind Method
Time Factors
Vasodilation / physiology
Veins / pathology
Wrist / blood supply,  ultrasonography

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