Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 13 July 1984:
Vol. 225. no. 4658, pp. 218 - 219
DOI: 10.1126/science.6729478
Prev | Table of Contents | Next

Articles

Science, Vol 225, Issue 4658, 218-219
Copyright © 1984 by American Association for the Advancement of Science

articles

Venous pressure in man during weightlessness

KA Kirsch, L Rocker, OH Gauer, R Krause, C Leach, HJ Wicke, and R Landry

To determine whether the body fluid shift from the lower limbs toward the head that occurs during spaceflight leads to lasting increases of venous pressure in the upper body, venous pressure and hematocrit measurements were made on four astronauts before flight and 1 and 12 hours after recovery and compared with measurements in space. During the mission the hematocrit was elevated and the venous pressure lowered by 1 to 8 centimeters of water as compared with the preflight data. One hour after landing the hematocrit decreased, indicating a hemodilution, venous pressures were unexpectedly high, and a body weight loss of 4 to 5 percent was observed. Twelve hours later the venous pressures were the lowest recorded during the study. The fluid shift apparently takes place during the first several hours of spaceflight. Thereafter, the pressure in the peripheral veins and the central circulation is lower than that measured before flight.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Fluid volume control during short-term space flight and implications for human performance.
D. E. Watenpaugh (2002)
J. Exp. Biol. 204, 3209-3215
   Abstract »    Full Text »    PDF »
Evidence for central venous pressure resetting during initial exposure to microgravity.
V. A. Convertino, D. A. Ludwig, J. J. Elliott, and C. E. Wade (2001)
Am J Physiol Regulatory Integrative Comp Physiol 281, R2021-R2028
   Abstract »    Full Text »    PDF »
Influences of thigh cuffs on the cardiovascular system during 7-day head-down bed rest.
P. Arbeille, S. Herault, G. Fomina, J. Roumy, I. Alferova, and C. Gharib (1999)
J Appl Physiol 87, 2168-2176
   Abstract »    Full Text »    PDF »
Evidence for increased cardiac compliance during exposure to simulated microgravity.
S. C. Koenig, V. A. Convertino, J. W. Fanton, C. A. Reister, F. A. Gaffney, D. A. Ludwig, V. P. Krotov, E. V. Trambovetsky, and R. D. Latham (1998)
Am J Physiol Regulatory Integrative Comp Physiol 275, R1343-R1352
   Abstract »    Full Text »    PDF »
Central Venous Pressure in Space.
J. C. Buckey, F. A. Gaffney, L. D. Lane, B. D. Levine, D. E. Watenpaugh, and C. G. Blomqvist (1993)
N. Engl. J. Med. 328, 1853-1854
   Full Text »
The Spacelab Experience: A Synopsis.
C. R. CHAPPELL and K. KNOTT (1984)
Science 225, 163-165
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)