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Old 04-11-2020, 07:41 AM   #1
Nguyen
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A few words about N95 respirator

I thought I write a few words about N95 mask, sorry if this information are trivial to you. if you are next to someone wearing an N95 mask with valve (the respirator has a protruding mechanism on the surface), stay away from this wearer much farther than 6 feet. This valve helps the wearer breaths easier by opening up and let out breath go directly out. So it protects the wearer but not people around. Also, this valve breaks up respiratory droplets to many more (than no valve) micro-droplets and accelerates them further. Think of the size of the lung and the valve opening, the effect is similar to generating a jet stream from a garden hose. Some of these respirators even have a battery operated micro fan attached to this valve which generates more micro-droplets and blows them further.

If you are a wearer of N95 with valve, please tape it shut, or tape a cloth over it. You can still breath out easier (than respirator with no valve) with it with the cloth, it also has some benefit to you. The valve is just a very simple cheap mechanism, which overtime (particularly with repeat sanitizing for reuse) might not close fully, and let in unfiltered air. During the breath out phase, a sticky nose hair might stick to the edge, preventing full closure. The cloth over the valve stops much of the outgoing droplets and also gives some level of filtration if the valve does not close fully or slow to close.

Last, when wearing a highly restrictive respirator, it’s possible that it will raise your heart rate and cause an event for you. It depends on your heart condition and lung capacity. Test fit and wear it at home, walk around for 10 minutes to see how you feel before going out.

Nguyen
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Old 04-17-2020, 06:48 AM   #2
Nguyen
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Re: A few words about N95 respirator

See attached image.
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File Type: jpg n95valve.jpg (70.4 KB, 22 views)
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Old 05-27-2020, 08:42 PM   #3
StephN
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Re: A few words about N95 respirator

Thank you. Not all face masks/coverings are created equal!
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MY STORY SO FAR ~~~~
Found suspicious lump 9/2000
Lumpectomy, then node dissection and port placement
Stage IIB, 8 pos nodes of 18, Grade 3, ER & PR -
Adriamycin 12 weekly, taxotere 4 rounds
36 rads - very little burning
3 mos after rads liver full of tumors, Stage IV Jan 2002, one spot on sternum
Weekly Taxol, Navelbine, Herceptin for 27 rounds to NED!
2003 & 2004 no active disease - 3 weekly Herceptin + Zometa
Jan 2005 two mets to brain - Gamma Knife on Jan 18
All clear until treated cerebellum spot showing activity on Jan 2006 brain MRI & brain PET
Brain surgery on Feb 9, 2006 - no cancer, 100% radiation necrosis - tumor was still dying
Continue as NED while on Herceptin & quarterly Zometa
Fall-2006 - off Zometa - watching one small brain spot (scar?)
2007 - spot/scar in brain stable - finished anticoagulation therapy for clot along my port-a-catheter - 3 angioplasties to unblock vena cava
2008 - Brain and body still NED! Port removed and scans in Dec.
Dec 2008 - stop Herceptin - Vaccine Trial at U of W begun in Oct. of 2011
STILL NED everywhere in Feb 2014 - on wing & prayer
7/14 - Started twice yearly Zometa for my bones
Jan. 2015 checkup still shows NED
2015 Neuropathy in feet - otherwise all OK - still NED.
Same news for 2016 and all of 2017.
Nov of 2017 - had small skin cancer removed from my face. Will have Zometa end of Jan. 2018.
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