Quote:
Originally Posted by kmoose
60 ft of in-water on 100% would be beyond risky for a seizure. Under controlled environments such as this chamber, what depth range do you start seeing O2 toxicity issues? My friends and I do some very remote tech spearfishing and our considerations for IWR max is at 42 fsw at 100%.
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For reasons still unknown to science the body will take 100% O2 deeper in a chamber than it will in the water column. In water D stops on 100% 02 for us don't start until 30ft, but we will do 50/50 deeper.
To limit O2 toxicity the PX takes air breaks between O2 breathing periods. For instance a treatment table 6 is probably the most common treatment table that you would go on and would be as follows:
3 min descent to 60ft
20min O2
5min Air
20min O2
5min Air
20min O2
5min Air
Go on O2 and leave 60ft to 30ft at 1ft min
15min Air
60min O2
15min Air
60min O2, stay on O2 and leave 30ft to surface at 1ft min