Postflight orthostatic intolerance and cardiac hemodynamics associated with manned space flight have been investigated on seven STS missions. Orthostatic heart rates appear to be influenced by the mission duration. The rates increase during the first 7-10 days of flight and recover partially after that. Fluid loading is used as a countermeasure to the postflight orthostatic intolerance. The carotid baroreceptor function shows only slight responsiveness to orthostatic stimulation. Plots of the baroreceptor function are presented. It is concluded that an early adaptation to the space flight conditions involves a fluid shift and that the subsequent alterations in the neutral controlling mechanisms contribute to the orthoststic intolerance.
Cardiovascular function in space flight
1990-10-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Cardiovascular function in space flight
NTRS | 1991
|Cardiovascular physiology in space flight
Elsevier | 1991
|Cardiovascular adaptation to space flight
AIAA | 1990
|