Update 1988 pp 369-384 | Cite as

Physiological Meaning of Intravascular Pressure

  • A. Versprille
Part of the Update in Intensive Care and Emergency Medicine book series (UICM, volume 5)


Changes in pressure result from changes in density of molecules which are so small for fluid that volume changes in a fluid can be neglected for all pressure changes within a physiological range. When we take a breath and dive to ten meters below water surface ambient pressure will be doubled to two atmospheres. This increase in pressure will not change the volume of our body except for the gas volumes of our lungs and intestine. These cavities will decrease to half their normal value according to the law of Boyle Gay Lussac: PV/T is constant, where P is pressure, V is volume and T is absolute temperature.


Venous Pressure Venous System Venous Return Flow Resistance Actual Pressure 
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    Guyton AC, Jones CE, Coleman TG (1973) Circulatory Physiology: Cardiac output and its Regulation. Saunders, Philadelphia.Google Scholar
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    Versprille A, Jansen JRC (1985) Mean systemic filling pressure as a characteristic pressure for venous return. Pflügers Arch 405:226–233.PubMedCrossRefGoogle Scholar
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    Payen DM, Carli PA, Brun-Buisson CJL, et al (1985) Lower body positive pressure vs dopamine during PEEP in humans. J Appl Physiol 58:77–82.PubMedGoogle Scholar

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© Springer-Verlag Berlin Heidelberg 1988

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  • A. Versprille

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