Postural hemodynamic shifts following short-term space flights
Vasil'eva T.D.; Yarullin, K.K.; Zhuiko, V.I.
Kosmicheskaia Biologiia i Aviakosmicheskaia Meditsina 17(2): 44-48
1983
ISSN/ISBN: 0321-5040 PMID: 6855173 Document Number: 216859
Variations in the pulse blood content and tone of the cerebral vessels, vertebrobasilar system, lungs and legs during the antiorthostatic tests were examined rheographically in 14 cosmonauts after 8-day space flights. The results of adaptation of the vascular system to zero-g which included smaller changes in hemodynamic parameters of the hemispheres and vertebrobasilar system during postflight tests were seen during the 1st days of the recovery period. Regional hemodynamic parameters returned to the preflight level within 3 to 14 days postflight. The vascular response to the head-down tilt at -15 and -30.degree. was the most informative. This led to the recommendations concerning modifications of antiorthorstatic tests to be used in the selection of space crewmembers for short-term flights.