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  Bridget Elliott <ZLBBLE@zo*.up*.ac*.za*> wrote on Mon 26 Sep 1994 09:25:49
GMT+0200 (Subject: Re: Altitude):-

  > Just some more interesting facts on hypoxia at altitude... If a man were
placed at 19 000 m (63 000 ft) altitude, his lungs would be filled with water
vapour, and no air or oxygen could enter his lungs (because at the body temp
of man, the water vapour pressure is 47 mm Hg (6.28 kPa)). [= 0.0628 bar]
  I.e. his body fluids would boil at blood heat, i.e. he would suffer
space-type decompression injury, he would need a pressure suit. Presumably if
the air pressure was at least c. 0.1 bar, he could get away with a pure oxygen
breathing set, but would need acclimatization to live on that little ppO2.

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