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Lazarus Long Profile picture
@LazarusLong13
Jan 5, 2022 • 10 tweets • 5 min read • Read on X
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A quick thread on why elastomeric respirators are better than N95's.

In short? Like N95/N99 disposables are better than surgical/cloth masks?

Primarily, fit. Not that fit 👇👇.

How it fits to your face.

For a number of different reasons that may surprise you.
First off, getting the respirator to actually fit to your face.

Not all facial geometries are the same.

The Fit Test Panels used to evaluate fit, I submit, do not have enough women or Asians.

Archived the pdf here:
web.archive.org/web/2022010510…

Study here:
tandfonline.com/doi/abs/10.108…
So, no surprise that with N95 disposables that 👇👇

High - level:
web.archive.org/web/2021082422…

Direct Study Link:
web.archive.org/web/2021020313…
web.archive.org/web/2021082422… Image
Do elastomerics fit easier? Yes - because of the elastomeric material (another way of saying 'rubber-like', but usually made of medical grade silicone.

So when comparing the two, we find a huge difference:

With 60 subjects from the ASA, 98% of elastomerics passed fit testing Image
versus 57% of disposables.

And the single failed fit test for the elasto's? She switched from a medium to a small and passed.

web.archive.org/web/2021020313… Image
In this next study:
jamanetwork.com/journals/jama/…

87% of participants had experience with elastomerics or disposables.

Only 1.3% had experience with elastos.

So, they were largely experienced at wearing N95's.
Yet, after watching just a 9 minute video, 92% were able to successfully fit the elastos's vs 88.5% in the N95's that they were experienced at.

Let's move on.

Speaking of movement, elastomerics keep their fit much better during movement.

Do you move during your job? Cook?
Clean? Do things as manually involved as CPR?

Then you will want an elasto.

In jamanetwork.com/journals/jaman…

N95's performance during CPR was poor. (Filtering Face piece Respirator 👇).

But elastomeric half-mask respirators' (EHMRs) performance was high.

This study confirmed Image
this next study, that CPR causes N95's to lose fit.

Their conclusion is stark and very real.

sciencedirect.com/science/articl… Image
Let's end on a light note.

Elastomeric respirators?

They let you keep fit and having fun!

With clean lungs!

• • •

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More from @LazarusLong13

Lazarus Long Profile picture
Nov 2
Thread of debunking the myth that "babies should not be masked."

A baby uninfected is better than a baby infected.

If you oppose masking babies, you are immediately for infecting babies.

Let's get to it. A most excellent instruction page on how to mask babies. Suck it antimaskers.
This solves an equity problem.

Not everyone has the money or technical skill to build a baby buggy PAPR.

Just like not everyone has the money to buy an adult PAPR.

Are you for people on SNAP being able to protect their babies? Or not?

Most can rustle up the money to buy some uber cute baby masks!

This is the link from the baby zine.

These need to be fit tested.

Now, let's get into the good stuff. The "OMG Laz has gone too far! We've got him!"

You better bring your A game.

aliexpress.us/item/325680749…
Read 39 tweets
Lazarus Long Profile picture
Oct 22
If you are Covid Aware you have probably been avoiding the dentist. Well, the dental studies have come to you.

This edition? #CovidAwareSoReducingDentalVisits - Water flossing (WF) edition.

Or, as I like to think of it, the Gum Salon.

Thread.
Flossing is necessary for those super tight contact points as you see in the above thread, and is great to remove plaque down 1 mm deep in the gum line (gently).

InterDental Brushes are fantastic and go down 2-3 mm into the gum line to remove plaque.

And WFs in general, are, well, amazing!!

They basically go back and forth with InterDental Brushes on which is better as far as being the top of the food chain for overall cleaning of the space between your teeth.

But.

If you have gum recession, you may have this Image
Read 19 tweets
Lazarus Long Profile picture
Oct 8
#CovidAwareSoReducingDentalVisits - less mouth open = less 'vid risk.

I am a GREAT flosser. My family thought we had genetic gum disease.

Below we can see rubber stick on the left, floss on the right, and a InterDental Brush (IDB) in the middle.

See the problem?
/1 Image
A couple more example pics on why I am sick to my stomach thinking of all that money wasted.

We THOUGHT we had great dentists. Not a single one mentioned IDBs, and how the bristles allow all interdental spaces to be reached.

And it gets better!

/2 Image
Image
IDBs actually reach down in between the gum and teeth - 2-3 mm. Floss? Only 1-2 mm.

As plaque grows down into and touches your gums, that's what causes them to get inflamed - and begin to retreat (very simplified).

If you brush that space? Problem solved.

/3 Floss, Interdental Brushes, and Waterpics Use all of them - floss works great for those narrow spaces. Interdental Brushes (IDB) work great in larger spaces. Waterpics work great immediately after eating, as you want to wait for an hour eating acidic/sweet just like regular brushing. It is a mistake to NOT IDB. Multiple studies indicate IDB is good, including this RCT where IDB was better than flossing (free version - great how to brush) - with people with chronic periodontitis. Students found IDB to be better. But IDB is better than rubber picks is better than floss. IDB way better ...
Read 25 tweets
Lazarus Long Profile picture
Oct 7
Covid Aware Teeth

The Calcium Lactate Rinse. Cheap, super easy to do - and it really enhances your fluoride uptake to re-enamel your enamel.

It's just not very well known, despite being very well supported within studies - and very cheap.

Mix 1/8 tsp with 1 oz water. Shake
thoroughly, till the granules disappear. Takes a few or 20 shakes, then just wait. Rinse for 1 minute. Spit out.

Immediately brush with fluoride or fluoride rinse.

There might be a better powder
amazon.com/dp/B0DHXX9LYC?…

1/8 tsp
amazon.com/dp/B0D5LH3K1H?…

pmc.ncbi.nlm.nih.gov/articles/PMC38… Image
I use the same 1 oz shaker as my stannous fluoride rinse comes in.

(That fluoride rinse was $4 cheaper at my dentist than this $24.

My Prevident 5000 ppm actually did not need a prescription - if bought from my dentist, as a couple of side notes.)

amazon.com/3M-ESPE-PerioM…
Read 24 tweets
Lazarus Long Profile picture
Sep 18
.On the one hand, we have study after study showing 36% or so rate of LongCovid.

On the other, we have the WHO saying the rate of LongCovid is only 6%.

I got curious. What drugs are the WHO smoking - and can I get some?

🧵. Image
My 36% comes from the latest massive meta:
eatg.org/hiv-news/more-…

But what about that 6%?

Turns out it's this old chestnut from 2022.

And there are such major players on it...so many I can't even screenshot them all.

But I fear no title - and neither

jamanetwork.com/journals/jama/… Image
will you.

The problem with this 6%? There are 200+ symptoms in the LongCovid symptoms constellation.

This study focuses on three clusters.

Which is incredibly vague, which is normal for the WHO.

So, after digging through the f***ing supplement, there are a few symptoms Image
Read 10 tweets
Lazarus Long Profile picture
Sep 7
COVID is as transmissible as measles?!

"BUT, BUT, measles can infect up to 90% of people they are in contact with!"

So can COVID.

Time to wake up. The lecturer tried to promote sales of a flax oil product, and many elderly people were lured to attend by the promise of free eggs, Xinhua News Agency reported. He gave three lectures on Jan 10 and 11 in a Tonghua classroom while not wearing a mask, with each lecture lasting about 2.5 hours. A total of 97 people, most of them retirees, attended the lectures in a classroom whose doors and windows were closed, the China CDC report said. The lecturer went to a pharmacy at noon on Jan 10 due to muscle pain and other symptoms, indicating he was likely at an early stage of the disease then, it ...
weekly.chinacdc.cn/en/article/doi…

govt.chinadaily.com.cn/s/202102/20/WS… Image
So, some will be pushing back - always welcome, albeit this is anticipated.

Rnaught is just an estimate.

The famous measles 12-18 is shown below.

But the R0 of 6-8 has the most estimates.

Free
sci-hub.se/https://doi.or…

Pay
sciencedirect.com/science/articl… Image
Read 8 tweets

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