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I have not seen the latest study but this chap also published one in the =
British Medical Journal of March 1997.
In the March `97 study 88 divers were also examined (same divers =
probably). To conclude anything from such a tiny population is IMHO an =
assumption not based on adequate scientific data.
Another study in 1991 found brain lesions in 34% of `professional =
divers`examined. This same study also discovered lesions in 42% of the =
control subjects (who had never dived)!
`Should we all be rushing out to get ourselves tested for PFO`s? The =
answer is no. The problem with MRI studies of divers is that they =
invariably use test groups that are too small from which to draw firm =
conclusions. And since brain lesions are present in both divers and =
non-divers, any link between diving and brain lesions is speculative`
=
Dive July 1999, Diving Dementia, =
Tony Day
On the other hand if this type of scare mongering worries you then by =
all means get yourself checked for a PFO. It`s your money!
=20
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<DIV><FONT color=3D#000000 size=3D2>I have not seen the latest study but =
this chap=20
also published one in the British Medical Journal of March =
1997.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>In the March `97 study 88 divers =
were also=20
examined (same divers probably). To conclude anything from such a tiny=20
population is IMHO an assumption not based on adequate scientific=20
data.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Another study in 1991 found brain =
lesions in 34%=20
of `professional divers`examined. This same study also discovered =
lesions in 42%=20
of the control subjects (who had never dived)!</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>`<EM>Should we all be rushing out to get ourselves
=
tested for=20
PFO`s? The answer is no. The problem with MRI studies of divers is that =
they=20
invariably use test groups that are too small from which to draw firm=20
conclusions. And since brain lesions are present in both divers and =
non-divers,=20
any link between diving and brain lesions is =
speculative</EM>`</FONT></DIV>
<DIV><FONT=20
size=3D2> &nbs=
p; =
; =
&=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; =
; =
=20
Dive July 1999, Diving Dementia, Tony Day</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>On the other hand if this type of scare mongering =
worries you=20
then by all means get yourself checked for a PFO. It`s your =
money!</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2> </FONT></DIV></BODY></HTML>
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