Cloth Masks Are Useless Against COVID-19 https://www.infectioncontroltoday.com...
Why Face Masks Don’t Work: A Revealing Review https://www.oralhealthgroup.com/featu...
Posted on 06/27/2020 8:27:59 AM PDT by ransomnote
“Within seconds, the air beneath the mask falls to 17.5 for oxygen content, “
Still more oxygen than an airline passenger!
The 19.5% is a recommended level, esp. in confined spaces.
I wonder what they do in Denver? Natural O2 levels of 17.3%. Must be why all those doctors in Denver are dying of suffocation with their masks on.
What I can’t figure out is how the mask doesn’t stop the virus (a particle), but it does trap gases.
I think the premise of this thread is nonsense. More important than whatever oxygen level is measured underneath a mask is the %SpO2 level of the wearer of the mask. If the %SpO2 is measured as adequate, then there is no problem.
It just so happens that I have a pulse oximeter and have measured my %SpO2 while sitting with both a mask on and off. The readings under both conditions range from 92% to 96%. Because I’m sitting at a mile high elevation, 92% is the minimum adequate %SpO2.
“The 19.5% is a recommended level, esp. in confined spaces.”
Only for confined spaces to determine need for supplemental oxygen.
Basically OSHA assumes that workers at altitude are acclimated.
Can’t you use a restroom to take it off?
I worked on a project for three months (years ago when I was younger) where we lived at 9,000(?) feet and worked at 13,000 to 14,000 feet.
It was rough at first, but at the end of the project I was thinking “I’m going to be like Superman when I get back home! (near sea level).
That conditioning didn’t last long once home....
“I think the premise of this thread is nonsense. “
Yep. FAA allows a pilot to go to 12,500 to 14,000 feet without supplemental oxygen.
That is about 13% effective concentration. If the FAA says it is safe to pilot an aircraft at those concentrations, 17% at seal level is surely safe.
“What I can’t figure out is how the mask doesn’t stop the virus (a particle), but it does trap gases.”
Same reason the virus doesn’t affect Antifa rioters.
Not yet!
Sorta, 19.5% and >19.5% is safe. When you deal with OSHA guidelines, they are precise to the very number, so anything lower than 19.5% is unsafe and that's where they'll get you in terms of compliance. Aberrance is the bane of science & definitely healthcare.
FAA has different guidelines, so you can't really use that for OSHA, any more than you can say OSHA governs over people who are not on the job who require certain protection(s) under certain conditions. Not all people exist under the conditions mentioned by OSHA - it's impossible.
For the healthcare workers, for example, they'll be governed by OSHA as well as CDC, NIH, AHCA, AHA, CMS and a few others and they report to the CDC as well as WHO.
I guess what I'm saying is that not all entities answer to OSHA standards for everything. This is why Drs. Fauci & Birx often refer to the CDC standards and, if you recall in the beginning of the Covid situation, it was also the WHO, when they make their recommendations.
The key here is that monitoring is done via Pulse Oximeter, a clothespin-like device you put on a finger which tells the oxygen saturation in the blood, but you probably already know this. Not many people have one of these gadgets & various conditions can affect the readings. That means they're not as reliable as a blood draw with a diagnostic to test oxygenation the way they do in cardiovascular or pulmonary surgery. I've had the personal pleasure of playing games with mine & also with my pulse rates when a case of the imp comes over me and I'm teasing the practitioner/doc, and I say that because it's possible for certain outcomes to be manipulated either on purpose or by other factors. "Other factors" play a HUGE role in Covid, the treatment of along with prevention.
Hartford Healthcare states this: "Healthy blood oxygen levels are around 97 percent. At levels below 90 percent, the brain may not get enough oxygen and people might feel confused or sluggish. If levels dip to the low 80s, vital organs could be damaged." https://midstatemedical.org/about/news-press/news-detail?articleid=25777&publicId=395 Again, I must emphasize that various factors & conditions will affect the outcome of the % of oxygen in the blood so it can't be a "one size fits all" kind of thing, can it?
Again, though, I'm not at all certain that CDC has even measured the oxygen saturation of a patient wearing a mask, including the type of mask(s), while doing various daily types of activities and with extended or prolonged use. I don't know, I haven't studied this at any great length as this isn't exactly my area of expertise. Given that the "Novel Coronavirus" is exactly that - a NOVEL or new virus - I doubt very much that any studies on continuous or extended face mask use have ever been done.
Yes, our surgeons use face masks during surgery, sometimes for several hours at a time. The longest surgery I've seen was over 12 hours. However, masks and gloves are changed at intervals and they're not the same kind that the ordinary "Joe" would wear. This is to minimize the risk of bacterial or viral transmission from the surgeon to the patient. CDC has LONG recommended the use of wearing face masks to prevent person-to-person transmission of viruses & other conditions (TB, for example). Here's fun reading from CDC in 2009 "Face Mask Use and Control of Respiratory Virus Transmission in Households" https://wwwnc.cdc.gov/eid/article/15/2/08-1167_article
Please note, there's no mention on the oxygen saturation & of such in terms of safety to the wearer after extended use! What does that mean? Probably it's something they either never thought about or haven't yet studied,
Personally, I don't like masks, find them restrictive and difficult to breathe while wearing one. In the state where I'm living, it's still voluntary to wear except in healthcare settings & some other places; I personally limit where I go including just how close I get to someone I don't know. That's just me, but I notice others aren't as cautious about it - with/without wearing a mask. "Herd mentality" - I'm all for it, if you've got kids & sent them to school, you'll recall the first couple of months of sniffles, bad colds that go through the house, etc. Covid is worse than that, but...I wonder if the principle is similar. I don't know, I'm not a scientist & don't presume to have all the facts nor know all the answers.
“When you deal with OSHA guidelines, they are precise to the very number, so anything lower than 19.5% is unsafe”
Two threads and no one has shown where OSHA says anything lower than 19.5% is unsafe!
“For the healthcare workers, for example, they’ll be governed by OSHA”
Then why doesn’t OSHA ban the use of their approved masks if they are not safe?
If you read the CDC guidelines, they insist that the “right” kinds of masks be reserved for healthcare and not be given to or used by the every day person.
Kind of a conundrum, don’t you think?
OSHA is precluded from applying its occupational safety and health standards to working conditions over which another federal agency, such as the FAA, has exercised its statutory authority. 29 U.S.C § 653(b)(1).
“OSHA is precluded from applying its occupational safety and health standards to working conditions over which another federal agency, such as the FAA, has exercised its statutory authority. 29 U.S.C § 653(b)(1).”
And your point is?
“so anything lower than 19.5% is unsafe”
Please ... Why then is it safe to pilot plane with an effective oxygen level of 13%?
Please ... Why then is it safe to fly passengers with an effective oxygen level of 15%?
LOL.
“OSHA requires that 19.5 level for a “safe environment”
Reference, please.
Then, since OSHA allows work in < 19.5% then < 19.5% must be safe!
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