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  • 1
    Electronic Resource
    Electronic Resource
    Effective compliance of the circulation in the upright sitting posture (1978)
    Springer
    Pflügers Archiv 374 (1978), S. 121-124 
    Details
    ISSN: 1432-2013
    Keywords: Immersion ; Effective circulatory ; Compliance ; Posture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effective compliance is defined as the relation of change in blood volume to change in central venous pressure. It was measured in 8 upright sitting male subjects and amounted to 3.3 ml/(mm Hg×kg BW). It is, therefore, by about 50% greater than the effective compliance in the supine subject which amounts to 2.3 ml/(mm Hg×kg BW). This difference is probably due to the posture dependent blood volume distribution in the low pressure system whose “upper” and “lower” sections have nonlinear pressure-volume characteristics. Immersion to the neck reduces the effective compliance to about half the control value (1.9 ml/(mm Hg×kg BW) which probably constitutes the effective compliance of the intrathoracic circulatory compartment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00581291
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Changes of peripheral venous tone and central transmural venous pressure during immersion in a thermo-neutral bath (1974)
    Springer
    Pflügers Archiv 352 (1974), S. 211-217 
    Details
    ISSN: 1432-2013
    Keywords: Venous Tone ; Transmural Central Venous Pressure ; Immersion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Peripheral venous tone, central venous and oesophageal pressures were recorded while the upright sitting subjects were immersed to the neck in a thermoneutral water bath. The central venous pressure rose from 3.4 to 15.2 mm Hg and the oesophageal pressure from −0.4 to +3.4 mm Hg. The transmural pressure, which determines the enddiastolic volume of the heart, increased by 8.0 mm Hg. Plethysmographic determinations of peripheral venous tone revealed a relaxation of the peripheral veins: after a quick initial decrease of the volume elasticity coefficient (E′15) from 16.6 to 13.5 mm Hg/ml/100 g tissue there is a continuous decline to 11.8 mm Hg/ml/100 g tissue after 3 hrs immersion. This relaxation persists for at least 1 hr after termination of immersion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00590486
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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