[ RadSafe ] Query re human pulmonary processes or mechanics.

[Philip Simpson]

My take is that pursed lips force stale air from deeper in the lungs. Try it out - you can feel your diaphragm working.  I believe this is similar to the reason scuba divers are taught to breath deep and slow.  The more effective air exchange in the lungs, as compared to shallow breathing, conserves air in the tanks. 

Another non-expert theory.

Phil Simpson
Engineer III (Retired)
University of Michigan
Ford Nuclear Reactor (Also retired)

> On Oct 31, 2016, at 11:10 AM, Maury <maurysis at peoplepc.com> wrote:
> 
> Thanks, John.  I think the higher air pressure account is a major aspect of the pursed lips breathing. I've just never seen any data showing exchange rates as a function of pressure.  The rationale seem very sensible, but wonder if someone couldn't make a thesis or dissertation out of it. . . .<g>
> Thanks again for the information,
> Maury&Dog  (Maury Siskel)
> maurysis at peoplepc.com
> ================================
> 
> On 10/31/2016 7:46 AM, JOHN.RICH at sargentlundy.com wrote:
>> This is a "little" off topic, but, but, that's the same breathing
>> technique advocated by La Maze(sp?) for labor during the birthing process.
>>  It might be that the slightly higher air pressure in the lungs increases
>> the oxygen exchange rate.  Also as everybody knows who blows up those
>> little balloons at a kids birthday party, exhaling under pressure does
>> make you dizzy - - - too little CO2?
>>  - - a true non-expert on this subject  - - jmr
>> 
>> 
>> 
>> John Rich
>> Manager/Consultant 2
>> Nuclear Power Technologies
>> Sargent & Lundy
>> 55 East Monroe Street | Chicago, IL 60603
>> office: 1-312-269-3768 | mobile: 1-561-676-8144
>> email :john.rich at sargentlundy.com
>> 
>> 
>> 
>> From:   Maury <maurysis at peoplepc.com>
>> To:     "The International Radiation Protection (Health Physics) Mailing
>> List" <radsafe at health.phys.iit.edu>, Mailing List for Risk Professionals
>> <riskanal at lyris.pnl.gov>
>> Date:   10/28/2016 03:26 PM
>> Subject:        [ RadSafe ] Query re human pulmonary processes or
>> mechanics.
>> Sent by:        radsafe-bounces at health.phys.iit.edu
>> 
>> 
>> 
>> Does anyone know of or have you seen empirical data re the expulsion of
>> CO2 in human breathing?  I've long heard that one with emphysema should
>> inhale thru the nose and exhale by mouth with pursed lips. The pursed
>> lips have been deemed significant to ridding the body of CO2.  Can
>> anyone shed empirical light? Thanks.
>> Maury Siskel
>> maurysis at peoplepc.com
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