Water drinking causes a biphasic change in blood composition in humans

To investigate precisely the fluid shifts associated with water drinking in humans, we measured continuously blood density and plasma electrolyte concentrations using the mechanical oscillator technique and ion-selective electrodes, respectively, in healthy young volunteers before (10 min) and after...

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Bibliographic Details
Published in:Pflügers Archiv 2001-06, Vol.442 (3), p.362-368
Main Authors: Endo, Y, Torii, R, Yamazaki, F, Sagawa, S, Yamauchi, K, Tsutsui, Y, Morikawa, T, Shiraki, K
Format: Article
Language:English
Subjects:
Adult
Blood pressure
Blood Pressure - physiology
Blood Volume - physiology
Chlorides - blood
Circulatory system
Drinking - physiology
Fluid Shifts - physiology
Heart Rate - physiology
Hematocrit
Hemodilution
Humans
Male
Osmolar Concentration
Sodium - blood
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Summary:To investigate precisely the fluid shifts associated with water drinking in humans, we measured continuously blood density and plasma electrolyte concentrations using the mechanical oscillator technique and ion-selective electrodes, respectively, in healthy young volunteers before (10 min) and after (48 min) water drinking for a period of 2 min. Beat-by-beat blood pressure was also monitored throughout the experiment. Drinking 1 l tap water caused a transient increase in blood density immediately after the drinking episode (from 1051.1+/-0.5 g/l before drinking to 1051.8+/-0.5 g/l 4 min after the start of drinking, P
ISSN:0031-6768
1432-2013
DOI:10.1007/s004240100555