Evaluation of cutaneous insensible water loss during hyperbaric exposure in humans
- PMID: 10519478
Evaluation of cutaneous insensible water loss during hyperbaric exposure in humans
Abstract
Background: Water evaporation diminishes in high pressure environment, however it is unknown whether insensible water dissipation from the human skin falls as a function of the increased environmental pressure. We designed the present study to measure cutaneous insensible water loss at various pressures during exposure to a simulated saturation dive.
Methods: Four healthy male volunteers were exposed to eight different pressures between 1 and 18.4 atmospheres absolute (atm abs). Resting insensible water loss from the skin was measured as change in the body weight and corrected for the weight of the respiratory CO2 - O2 gas exchange and the respiratory water dissipation.
Results: We made an equation for the relationship between cutaneous insensible water loss and environmental pressure as: w = 14.5 X p(-0.48), where, w is cutaneous insensible water loss in g x m(-2) x h(-1), and P is the environmental pressure in atm abs. The average cutaneous insensible water loss (15.3 g x m(-2) x h(-1)) at normal atmosphere decreased (p < 0.01) to 4.2 g x m(-2) x h(-1) (reduced by 73%) during a saturation dive to 18.4 atm abs.
Conclusion: The amount of insensible water loss estimated from the equation was comparable to that of reported observations.
Similar articles
-
The interplay of cutaneous water loss, gas exchange and blood flow in the toad, Bufo woodhousei: adaptations in a terrestrially adapted amphibian.J Exp Biol. 2005 Jan;208(Pt 1):105-12. doi: 10.1242/jeb.01349. J Exp Biol. 2005. PMID: 15601882
-
Hyperbaric diuresis at a thermoneutral 31 ATA He-O2 environment.Undersea Biomed Res. 1984 Dec;11(4):341-53. Undersea Biomed Res. 1984. PMID: 6535312
-
Reduced hyperthermia-induced cutaneous vasodilation and enhanced exercise-induced plasma water loss at simulated high altitude (3,200 m) in humans.J Appl Physiol (1985). 2011 Jan;110(1):157-65. doi: 10.1152/japplphysiol.00950.2010. Epub 2010 Nov 18. J Appl Physiol (1985). 2011. PMID: 21088208
-
[How much water is lost during breathing?].Pneumonol Alergol Pol. 2012;80(4):339-42. Pneumonol Alergol Pol. 2012. PMID: 22714078 Review. Polish.
-
The stress of hot environments.Monogr Physiol Soc. 1972;(29):1-312. Monogr Physiol Soc. 1972. PMID: 4620406 Review. No abstract available.
Publication types
MeSH terms
Substances
LinkOut - more resources
Medical
Research Materials
Miscellaneous