In article <1995Jul24.101614.1303 at gems.vcu.edu>, agnew at gems.vcu.edu
(Brainwave Surfer) wrote:
> In article <trudygDBzsFG.K8G at netcom.com>, trudyg at netcom.com (Trudy) writes:
> > Can cabin pressure or other issues from flying affect ones neurological
> > status when already altered. Specifically, generalized encephalopathy,
>
>> Trudy,
>> I have had training as a pilot only with Civil Air Patrol. I can tell you
> that flight does drop the air pressure in the cabin, and therefore the
> oxygen concentration going to the brain. I don't have details on how much
> the pressure drops, tho. I'm very sure that they will provide a oxygen
> mask for your daughter. I doubt that the pressure itself will do it,
> and as always, check with your doctor about my suggestion. I don't know if
> any drugs will have conflicts with oxygen useage. also, i'd suggest not
> smoking next to your daughter if she does use the oxygen!!!!! ;-)
>>> Jim
If this is not just a coincidence, the trigger is likely to be
hyperventilation associated with the drop in cabin pressure. This results
in a reduction in blood pCO2, and a decrease in H+ which, in turn, causes
cerebral vasoconstriction. That can activate epileptic foci. I would
watch for and try to prevent hyperventilation, with oxygen if necessary.
Eric Wassermann