Quote: (Originally Posted by
abowie)
Bad luck.
DCI is essentially a statistical entity. Just because you "dive within the NDL" doesn't mean that you can't get bent, just that it is unlikely.
To be honest that does look like a moderately provocative series of dives with (from a recreational perspective) reasonably deep maximum depths, shortish surface intervals and dives around the hour mark. While you friend is no doubt disapointed to have got bent, the only way to be absolutely certain of not getting bent is to never go diving.
I would ensure he is reviewed by a competent hyperbaric physician in the near future to talk through the implications of his bend.
Absolutely.
When I do recreational diving medicals I tell the people that, if they decide to go diving, there is an inevitable risk of DCI. You can do things to decrease the risk but you cannot eliminate it.
Whenever people post things like this there is allways dehydration, PFO etc etc etc. Maybe sometimes these are implicated but in the vast majority of cases the answer to "Why did I get bent?" is "Because you went diving".
Dave T