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Response of local vascular volumes to lower body negative pressure stressThe present study involved an intravenous injection of radioactive iodinated serum albumin, equilibration of this isotope within the vascular space, and the continuous measurement of isotope activity over selected anatomical areas before, during and following multiple human LBNP tests. Both rate and magnitude of vascular pooling were distinctly different within each of five selected lower body anatomical areas. In the upper body, all areas except the abdomen showed depletions from their resting vascular volumes during LBNP. The presence of uniquely different pooling patterns in the lower body, the apparent stability of abdominal vascular volumes, and a possible decrease in cerebral blood volume during LBNP represent the major findings of this study.
Document ID
19750047085
Document Type
Reprint (Version printed in journal)
Authors
Wolthuis, R. A.
Leblanc, A.
Carpentier, W. A.
Bergman, S. A., Jr. (NASA Johnson Space Center Cardiovascular Research Laboratory; Baylor College of Medicine, Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
May 1, 1975
Subject Category
AEROSPACE MEDICINE
Funding Number(s)
CONTRACT_GRANT: NAS9-13291
CONTRACT_GRANT: NAS9-11785
Distribution Limits
Public
Copyright
Other