| タイトル | Echocardiographic evaluation of Space Shuttle crewmembers |
| 著者（英） | Sandler, H.; Bungo, M. W.; Popp, R. L.; Goldwater, D. J. |
| 著者所属（英） | Stanford Univ.|NASA Johnson Space Center|NASA Ames Research Center |
| 発行日 | 1987-01-01 |
| 言語 | eng |
| 内容記述 | 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. |
| NASA分類 | AEROSPACE MEDICINE |
| レポートNO | 87A32005 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/378858 |
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