Abstract Purpose of the work is to analyze and to summarize the data of investigations into human hemodynamics performed over 20 years aboard orbital stations Salyut-7 and Mir with participation of 26 cosmonauts on space flights (SF) from 8 to 438 days in duration. The ultrasonic techniques and occlusive plethysmography demonstrated dynamics of changes in the cardiovascular system during SF of various durations. The parameters of general hemodynamics, the pumping function of the heart and arterial circulation in the brain remained stable in all the space flights; however, there were alterations in peripheral circulation associated with blood redistribution and hypovolemie in microgravity. The anti-gravity distribution of the vascular tone decayed gradually as unneeded. The most considerable changes were observed in leg vessels, equally in arteries (decrease in resistance) and veins (increase in maximum capacity). The lower body negative pressure test (LBNP) revealed deterioration of the gravity-dependent reactions that changed for the worse as SF duration extended. The cardiovascular deconditioning showed itself as loss of descent acceleration tolerance and orthostatic instability in the postflight period.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The human cardiovascular system during space flight


    Beteiligte:
    Grigoriev, A.I. (Autor:in) / Kotovskaya, A.R. (Autor:in) / Fomina, G.A. (Autor:in)

    Erschienen in:

    Acta Astronautica ; 68 , 9-10 ; 1495-1500


    Erscheinungsdatum :

    2009-11-09


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    The human cardiovascular system during space flight

    Grigoriev, A.I. | Online Contents | 2011




    Monitoring of cardiovascular parameters during the AustroMIR space flight

    Moser, M. | British Library Online Contents | 1992


    Cardiovascular function in space flight

    Nicogossian, A. E. / Charles, J. B. / Bungo, M. W. et al. | NTRS | 1991