The effects of space flight on orthostatic function were studied. LBNP tests (0 to -60 mmHg) were administered to 7 crew members preflight and 2 to 6 hrs after 6 to 9 day shuttle missions. Cardiac stroke volumes were obtained each minute by echo Doppler. Orthostatic responses are given. The data suggest a decline in postflight orthostatic function, as assessed by LBNP, due to reduced cardiac filling despite potentiated heart rate and vasoconstrictor reflex responses in most crew members.
Response to Graded Lower Body Negative Pressure (LBNP) after Space Flight
1994
1 pages
Report
Keine Angabe
Englisch
Space Technology , Stress Physiology , Aerospace medicine , Bioastronautics , Cardiovascular system , Heart rate , Lower body negative pressure , Orthostatic tolerance , Reflexes , Space flight stress , Space shuttle missions , Stroke volume , Vasoconstriction , Manned space flight , Postflight analysis , Spacecrews
Response to Graded Lower Body Negative Pressure (LBNP) After Space Flight
British Library Conference Proceedings | 1993
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