The study is relatively old. It was 1st published in 1997. So it just being rehashed for the purpose of some meeting - the game all academics play. The significance of the study is indeed questionable (that is the BMJ paper in 97) for a # of reasons, though it does make it obvious that deco protocoles that limit bubble size should be invoked, as all shunts R not the same. The next question is what R the meaming, physiologically, of those brain lesions. W/ the increase in the sensitivity of tests, one is able to p/u finer & finer abberrations. What do they really mean from the stndpt of the subject - no change, some deficit in cognitive abilities, etc. Yes the observation was interesting. The nxt step should B to study the significance of those lesions. Ideally, then, if found significant, then means to minimize the damage need to B developed. Arteriolization of venous bubbles can occur by mech other than R2L shunting. The phenomenon is thought to B associated w/ excessive bubbles in the pulmonary circ, overwhelming the 'filtering' ability of the pulmon capillaries (Also the putative cause of chokes, a form of DCS). If it is the arteriolized bubbles, then it is irrelevant if they were arteriolized via a shunt or via the pulmon capil bed. Safe bubbles Esat Atikkan --- Deep1dave@ao*.co* wrote: > I am glad to see this published. I have felt that > most of the "unexplained" > CNS hits were the result of right to left shunts > such as a PFO. There are > other types of right to left shunts. One is a > ventricular septal defect. > Basically, any defect that allows blood to get from > the right side of the > heart to left, without going through the filter of > the lungs, should > predispose a diver to this problem. > > David Horne DVM > -- > Send mail for the `techdiver' mailing list to > `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to > `techdiver-request@aquanaut.com'. > __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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