NDLI: Non-invasive assessment of human large vein diameter, capacity, distensibility and ellipticity in situ: dependence on anatomical location, age, body position and pressure

Content Provider	Springer Nature Link
Author	Bérczi, Viktor Molnár, Andrea Á. Apor, Astrid Kovács, Viktória Ruzics, Csaba Várallyay, Csanád Hüttl, Kálmán Mos, Emil Nádasy, György L
Copyright Year	2005
Abstract	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.
Starting Page	283
Ending Page	289
Page Count	7
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	95
Issue Number	4
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-09-07
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aging Extremity veins Valsalva test Veins Venous distensibility Sports Medicine Occupational Medicine/Industrial Medicine Human Physiology
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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