Document Detail


Non-invasive assessment of human large vein diameter, capacity, distensibility and ellipticity in situ: dependence on anatomical location, age, body position and pressure.
MedLine Citation:
PMID:  16151839     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective was to compare in-situ diameter, capacity and distensibility changes as well as ellipticity of large human veins of different locations, reveal alterations with age, body position and increased intraluminal pressure. Ultrasonographic assessment of mediolateral and anteroposterior diameters was performed of femoral, axillary and inner jugular veins, in erect and reclined positions as well as before and during controlled Valsalva test. Groups of young (24.0+/-0.4 years, n=11) and elderly (72.6+/-1.5 years, n=11) subjects were studied. Capacity of the femoral vein (reclined patients) gradually increased when a graded Valsalva test was applied. Its in situ distensibility was found to be 0.048+/-0.011 mm Hg(-1) between 0-15 mm Hg (1 mm Hg=0.133 kPa) pressure loads in reclined young subjects, which decreased to 0.009+/-0.005 mm Hg(-1) at 45-60 mm Hg. The femoral vein was considerably more rigid in the erect than in the reclined body position while an opposite correlation was found for the inner jugular vein. Axillary vein distensibility was very low and independent of body position. Ellipticity of femoral and axillary veins was minimal (the ratio of the two perpendicular diameters <1.25). Inner jugular veins were more elliptic in the erect position and without Valsalva (2.94+/-0.99 in young patients). Old femoral veins had higher capacity in the reclined position without Valsalva, while distensibility at low pressures was much more prominent in young vessels. The in situ femoral vein is more distensible in supine than in erect position, opposite to the inner jugular vein. The axillary vein is rather rigid in both positions. Only the inner jugular vein shows significant elipticity in situ. Aging decreases the distensibility of the femoral vein in reclined position.
Authors:
Viktor Bérczi; Andrea A Molnár; Astrid Apor; Viktória Kovács; Csaba Ruzics; Csanád Várallyay; Kálmán Hüttl; Emil Monos; György L Nádasy
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2005-10-27
Journal Detail:
Title:  European journal of applied physiology     Volume:  95     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-27     Completed Date:  2006-04-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  283-9     Citation Subset:  IM    
Affiliation:
Department of Cardiovascular Surgery, Semmelweis University, Budapest, Hungary. berczi@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Axillary Vein / anatomy & histology,  physiology
Blood Pressure
Female
Femoral Vein / anatomy & histology,  physiology
Humans
Jugular Veins / anatomy & histology,  physiology
Male
Posture*
Ultrasonography, Doppler
Valsalva Maneuver
Veins / anatomy & histology*,  physiology*

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


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