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  • Title: Isobaric inert gas supersaturation: observations, theory, and predictions.
    Author: Collins JM.
    Journal: J Appl Physiol Respir Environ Exerc Physiol; 1978 Jun; 44(6):914-7. PubMed ID: 209005.
    Abstract:
    An isobaric inert gas supersaturation model incorporating both diffusion and perfusion properties of biological tissue is presented in a form which allows ready comparison with experimental observations. This model requires only measurement of inert gas flux and blood gas solubility in order to evaluate "counterdiffusion potential". Inert gas flux across the skin of Yorkshire piglets anesthetized with pentobarbital was measured for He, Ne, CH4, C2H4, N2O, and SF6. Model predictions based upon these data compare favorably with published reports of isobaric inert gas supersaturation, as well as several previously unpublished observations. The possibility of supersaturation resulting from the use of hydrogen as a breathing gas in a helium environment is also discussed, and extensive animal testing is recommended before potentially dangerous human exposure occurs.
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