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Physiologic Pressure and Flow Changes During Parabolic Flight (Pilot Study)The objective of this study was to obtain measurement of cutaneous tissue perfusion central and peripheral venous pressure, and esophageal and abdominal pressure in human test subjects during parabolic flight. Hemodynamic data recorded during SLS-I and SLS-2 missions have resulted in the paradoxical finding of increased cardiac stroke volume in the presence of a decreased central venous pressure (CVP) following entry in weightlessness. The investigators have proposed that in the absence of gravity, acceleration-induced peripheral vascular compression is relieved, increasing peripheral vascular capacity and flow while reducing central and peripheral venous pressure, This pilot study seeks to measure blood pressure and flow in human test subjects during parabolic flight for different postures.
Document ID
20000026306
Document Type
Other
Authors
Pantalos, George (Utah Univ. Salt Lake City, UT United States)
Sharp, M. Keith (Utah Univ. Salt Lake City, UT United States)
Mathias, John R. (Texas Univ. Galveston, TX United States)
Hargens, Alan R. (NASA Ames Research Center Moffett Field, CA United States)
Watenpaugh, Donald E. (University of North Texas TX United States)
Buckey, Jay C. (NASA Johnson Space Center Houston, TX United States)
Date Acquired
August 19, 2013
Publication Date
August 1, 1999
Publication Information
Publication: KC-135 and Other Microgravity Simulations
Subject Category
Aerospace Medicine
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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