Echocardiographic measurements of left ventricular volume were obtained from 17 members of four Space Shuttle crews before and after 5- to 8-day space flights. Measurements obtained 1 h after landing indicated increases in the heart rate (HR), mean arterial pressure, and systemic vascular resistance values. On the other hand, the end-diastolic volume index (EDVI) fell 17 ml/sq m, and the stroke volume index (SVI) fell 15 ml/sq m. Measurements taken 1-2 weeks later demonstrated that the HR values returned to normal, but the EDVI and SVI values remained significantly below preflight levels, despite the ability of the subjects to ambulate and exercise. The results indicate that a space flight induces significant changes in heart volume affecting the left-ventricle function. It is suggested that the prolonged recovery period is related to the high level of aerobic conditioning in these subjects.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Echocardiographic evaluation of Space Shuttle crewmembers


    Beteiligte:
    Bungo, M. W. (Autor:in) / Goldwater, D. J. (Autor:in) / Popp, R. L. (Autor:in) / Sandler, H. (Autor:in)


    Erscheinungsdatum :

    01.01.1987



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Crewmembers

    NTRS | 2002



    Noise Levels and their Effects on Shuttle Crewmembers' Performance: Operational Concerns

    United States; National Aeronautics and Space Administration / United States; Air Force / University of Houston-Clear Lake | British Library Conference Proceedings | 1992


    Clothing and Personal Hygiene of Space Crewmembers

    Sulzman, F. M. / Genin, A. M. / Azhayev, A. N. et al. | AIAA | 1994