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Bren looks like Pete's going to add later.
Adam needed 5 hrs on table 6. As I remember it, it involves recompression down to 18mtrs and 02/Air cycles for about 2 hrs (20mins/10mins cycles or thereabouts) then a slow rise to 9m on 02 followed by 60min/10min cycles on 02/Air again (for approx 2 1/2 hrs). Followed by 30min to get back to normal pressure at the rate of 0.3m per min on 02. If the symptoms have subsided you get another bash the next day (or later anyway as you probably have DCI) for 2 hrs, not sure what the regime is there. I'm sure you could have a scurry round the net and find USN Table 6 if you wanted to (Hint). Following that you are advised to return one month later for a follow up and then if all-clear you are 'allowed' to dive again. Of course the last bit isnt enforcable and if you are in BSAC you need to sign the self-cert accordingly and possibly get medical approval next year. If the symptoms show no improvement after blast one, you probably dont have DCI and can ignore what happened. Adam went into a mono-place affair, a long see-through cylinder but would have had to go into the big pot for session 2 if he'd needed it. In the mono-place they had a speaker system for comms and placed a telly so he could see it and hear it through the speaker in the tube. The big-pot has masks and headphones. Oh yes in the mono-place you are in an 02 environment so no sparks are permitted, in fact they washed his hair to remove the gel in case it caught light. The big-pot is an air environment so you can take a book in and the nurse is in with you, not so the mono-place.
All in all good fun. The staff were very professional and looked at the dive plan with us to see if they could spot any obvious causes. We had a slight rise and fall in the middle of the dive, something like 3 m, they like to see no more than 1.5 to 2 max. Hope that helps.
Matt
(Edited by MATTBIN at 5:06 pm on Jan. 23, 2003)  |