Just thought I would share this link that I found last week regarding 
nebulizing.  It is a "cautious" link.  
http://silverdata.20m.com/nebulizers.html
It doesn't really answer the original question about osmotic pressure however.
Caroline
--

On Mon, 15 Oct 2001 08:20:46  
 Steven Geigle wrote:
>yes, I've just completed nebulizing 7-8 sessions over the last few days to
>wipe out a respiratory infection that snuck by me. In each session, I
>inhaled maybe one ounce.   I experienced no problems whatsoever..my lungs
>felt excellent after each session...I think the worst that can happen is
>that the additional moisture will help losen up the mucus and dead bacteria
>in the lungs.  I know my doc told me a good hot shower was like heaven for
>the lungs...getting lots of steam into the lungs is very therapudic.
>
>Happy nebulizing!
>
>----- Original Message -----
>From: "Marshall Dudley" <[email protected]>
>To: <[email protected]>
>Sent: Monday, October 15, 2001 7:09 AM
>Subject: Re: CS>Physician Warns of Possible Side Effects When Nebulizing CS
>
>
>[email protected] wrote:
>
>> List: I had a (too) short conversation with my physician daughter (she
>> gets very cranky whenever I bring up CS) who was predictably
>> distraught to here that I intended to use a nebulizer to administer CS
>> for various ailments including anthrax. She said something about the
>> osmotic pressure in lung tissue could be disrupted by nebulizing CS.
>> Would someone please explain what she was talking about, and second,
>> would those who have used CS in a nebulizer please let us know how
>> long you've been nebulizing CS, and if you have ever suffered any side
>> effects. Thanks Roger
>
>She is saying that the water will cause the saline wetting of the lung
>tissue to be diluted, thus causing the cells to absorb more water and
>possibly cause some type of problem.
>
>This is pure nonsense.  The amount of water in the colloidal spray is so
>slight that it is virtually invisible.  It evaporates spontaneously in
>less than a second.  If this were a problem then taking a walk in a
>heavy fog would be deadly, since the amount of water breathed into the
>lungs would be many times that from the nebulizer, and out species would
>have died out long ago.  Heck people can "drown" and be revived after
>getting the water out of the lungs and be fine.
>
>Marshall
>
>
>
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