CaptnJack wrote:dwashbur wrote:ljjames wrote:CO2, N2, O2... or some combo of the three.... he's very lucky.
stroke would likely be from gas embolism or explosive decompression, or a combo of the two.
The impression I get, and PLEASE somebody correct me if I misunderstood, is that the stroke was the explanation for his reduced vision, but the doctors aren't sure when the stroke happened in relation to the other events.
The DCS could have jiggled some plaque loose which cut off some blood supply to his brain, bubbles (either DCS or pulmonary embolism) themselves cut off blood supply to part of his brain and its healing, or he could have had DCS in his optic nerve and its damaged that way. There are various ways his visual symptoms could have been caused by DCS, embolism or both, and they would all look like a stroke might at 1ATA.
Rapid ascent and uncontrolled decompression would have manifested in arterial embolisms, which could definitely pose stroke like, (Not pulmonary, that would just give you shortness of breath, black outs etc), but the pulmonary embolism could explain the water on the lungs though (i.e through DCS induced pulmonary edema)
I agree with RJACK on maybe optic nerve damage due to DCS hit, but again.. all speculative..
For all we know at 212 the O2 component of Air is 1.6 PPO and
Kirby toxed out and when he came to his senses he was at 170ft with almost no back gas.. (CNS toxicity has the tendancy to make the episode seem like lost time)
He is just very very very lucky the reg stayed in is mouth long enough to breath down all the back gas and his beeping computer was loud enough to wake him up at 170ft..
but quite honestly (and with respect to all), this mumbo jumbo is all pure speculation based on the theoretical physiological responses in the human body to rapid gas diffusion and bubble growth during uncontrolled decompression..
None of us can really say what happened that caused
Kirby to skip all his deco... The only person would be
Kirby.. Any accounts of wrestling with ship bell's down there and blacking out because of CO2 hit is all speculative.
Lets wait for the
Kirby to get well so he can provide a detailed account on whether he was truly Bell wrestling at 212ft, causing him to CO2 out,.