Use of thigh pressure cuffs to modulate simulated microgravity-induced changes in the skin measured with high-resolution B-scan ultrasound
Identifieur interne : 000715 ( France/Analysis ); précédent : 000714; suivant : 000716Use of thigh pressure cuffs to modulate simulated microgravity-induced changes in the skin measured with high-resolution B-scan ultrasound
Auteurs : S. Diridollou [France] ; A. Maillet [France] ; A. Pavy-Le Traon [France] ; F. Louisy [France] ; D. Black [France] ; M. Berson [France] ; J. M Grégoire [France] ; Y. Gall [France] ; P. Arbeille [France]Source :
- European Journal of Ultrasound [ 0929-8266 ] ; 2001.
English descriptors
- KwdEn :
Abstract
Objective: The aim of the present study was to evaluate the fluid shift in a simulated microgravity experiment and to test the use of thigh cuffs to help alleviate the problem. Methods: The change in skin thickness was assessed by a 20 MHz B-scan ultrasound device. This was performed on eight volunteers who underwent two successive 7-day periods of −6° anti-orthostatic bed-rest, with or without the daytime use of thigh cuffs. The thigh cuffs were used to counteract the development of facial oedema. Results: In the control group (without thigh cuffs), the results showed a steady increase in skin thickness of the combined dermis and hypodermis of the forehead and a reduction of the thickness of this tissue on the tibia. For the countermeasure group, although thigh cuffs were only employed during the daytime — being removed at night — their use reduced the amplitude and kinetics of the fluid shift, resulting in greater beneficial effects at the end of the day than early in the morning. Conclusion: These results of objective measurements of skin made using a non-invasive high frequency ultrasonography method confirm reports by cosmonauts of a reduction in facial oedema and a more ‘comfortable’ adaptation to microgravity by the use of thigh cuffs during space flight. This system is potentially promising for investigating fluid shifts in the skin and may prove useful in the evaluation of some oedematous skin diseases, as well as their therapy.
Url:
DOI: 10.1016/S0929-8266(01)00135-5
Affiliations:
- France
- Centre-Val de Loire, Midi-Pyrénées, Occitanie (région administrative), Région Centre
- Toulouse, Tours
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ISTEX:A37FA0F1CB122A2283C1BB4AC5073BEFB97C47C3Le document en format XML
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Methods: The change in skin thickness was assessed by a 20 MHz B-scan ultrasound device. This was performed on eight volunteers who underwent two successive 7-day periods of −6° anti-orthostatic bed-rest, with or without the daytime use of thigh cuffs. The thigh cuffs were used to counteract the development of facial oedema. Results: In the control group (without thigh cuffs), the results showed a steady increase in skin thickness of the combined dermis and hypodermis of the forehead and a reduction of the thickness of this tissue on the tibia. For the countermeasure group, although thigh cuffs were only employed during the daytime — being removed at night — their use reduced the amplitude and kinetics of the fluid shift, resulting in greater beneficial effects at the end of the day than early in the morning. Conclusion: These results of objective measurements of skin made using a non-invasive high frequency ultrasonography method confirm reports by cosmonauts of a reduction in facial oedema and a more ‘comfortable’ adaptation to microgravity by the use of thigh cuffs during space flight. This system is potentially promising for investigating fluid shifts in the skin and may prove useful in the evaluation of some oedematous skin diseases, as well as their therapy.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Centre-Val de Loire</li><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li><li>Région Centre</li></region><settlement><li>Toulouse</li><li>Tours</li></settlement></list><tree><country name="France"><noRegion><name sortKey="Diridollou, S" sort="Diridollou, S" uniqKey="Diridollou S" first="S" last="Diridollou">S. Diridollou</name></noRegion><name sortKey="Arbeille, P" sort="Arbeille, P" uniqKey="Arbeille P" first="P" last="Arbeille">P. 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