Mailing List Archive

Mailing List: techdiver

Banner Advert

Message Display

Date: Tue, 30 Nov 1999 22:11:41 -0800 (PST)
From: Esat Atikkan <atikkan@ya*.co*>
Subject: Re: RE. PFO study
To: techdiver@aquanaut.com
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'.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]