One comment about this exhaled mist: quite a long time ago, a
long-absent list member who was very active in SARS studies claimed
that exhaled vapor from SARS patients, treated with some kind of
inhalation therapy, rapidly infected the therapists, doctors, and
nurses.
Bottom line: if you are seriously ill and using a nebulizer, stay away
from everyone! I believed the correspondent's report -- Catherine
Someone -- and have not forgotten it.
Epidemiologists fear a pandemic of avian flu and we had better be
prepared to help ourselves. Staying well to help is essential, so do
not inhale nebulized CS exhalations.
JBB
On Friday, Dec 3, 2004, at 19:03 Asia/Tokyo, J J wrote:
Garnet writes, again:
The droplet size is important because you want it to penetrate deeply.
The 'smoke' from from an ultrasonic nebulizer has a droplet
size that is already small enough. Refer to my last note at
'Thirdly', especially the part where it says, "... puff of
mist exiting ...". If you have some other reason for this
exhaled mist, could you explain?
Larger droplets will condense on the cilia higher up in the lungs.
If this is true, what then happens to inhaled mist droplets
after the cilia become saturated with condensed mist? I
noticed, for example, when starting a new misting session,
that I can't exhale any mist, regardless of how deep a
breath I take. After 3 to 4 minutes of nebulizing though,
even a medium intake of breath will produce exhaled mist.
Where does the exhaled mist come from? What's the mechanism
here?
Infection can occur higher up, but a lot of the mucous and pathogens
are
deeper, at the level of the alveoli.
Right. That's why people should nebulize for more than just
a few minutes per session.
Come on, Garnet. You seem to be quite knowledgeable about
and have some experience in biology. Answer or refute the
questions and statements I've put forth. My personal
experience contradicts what you've said here about the mist
from ultrasonic humidifiers. Please explain.
Jimmy Joe
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