Originally Posted by
Lurker1999
Now compare your sea level PaO2 (the amount of oxygen in your blood) to your levels at 8,000 feet and 30,000 feet. Let's say you have a "normal" range PaO2 of 90mmHg and no lung disease. At 8,000 feet you have a PaO2 of 56mmHg or just before the steep part of the oxyhemoglobin curve where your body gets really upset at you. At 30,000 feet you're estimated to have a PaO2 of 23mmHg which is pretty much guaranteed to make you pass out.
just out of interest would a very rapid decompression at 30,000ft be enough to make CO2 come out of solution in the blood, I know bottles of soda swell on normal descent.