Quote:
| Originally Posted by [b Quote[/b] (Steve W @ Mar. 06 2003,12:34)]A couple of years ago another girl in the club had a CAGE caused by a short 17metre dive, she was losing consciousness at the surface, fortunately she made a full recovery but quite naturally gave up diving.
Chee-az
steve |
<font color='#000080'>Hi Guys,
This sounds all too familiar.
IMHPO if K wishes to continue diving it is essential she excludes a PFO. No real nead if not.
For the not-so cogniscenti a PFO is a small communication between the two atria which is present in 30% of the population (according to post-mortem evidence). It is haemodynamically insignificant in the vast majority.
Two additional features must be present for a PFO to cause a type II DCI or a CAGE;
1) Micronuclei or bubble formation - all dives are decompression dives and it is isometric execise that promotes the excessive formation of micronuclei, even on so-called no deco dives.
2) A reversal of the blood flow from a left to right shunt allowing these micronuclei to enter the arterial system and lodge in an end organ. This is caused by oughing or Valsalva-like manoeuvres, such as when carrying heavy kit after an earlier dive.
These nascent bubbles ongas during the subsequent dive and then expand on the ascent. . . .
Can I also wish K all the best for her future. FWIW I think the first girl made the right decision.