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Denise Dewald, MD 🗽 Profile picture
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4 Nov, 4 tweets, 2 min read
Imagine how reassuring it would be as a patient to see a portable HEPA air filter unit running in the exam room.
Hospitals room are supposed to have 4-6 air changes per hour. You would think that by extension, outpatient exam rooms as well, but NOPE. This pediatrician exam room with a CO2 level of 2357ppm doesn't seem to be adequately ventilated (want CO2 < 800ppm)
I tried finding out the minimum air changes per hour is in freestanding outpatient clinics, but what unable to find it. But what I did find is that they can use pretty pathetic filters - MERV 7. Hospitals are required to have MERV 13. My house has MERV 10.tridim.com/wp-content/upl…
MERV 7 filters <20% of particles. HEPA filters are sorely needed in outpatient facilities if this is still the standard. Yikes.

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More from @denise_dewald

Denise Dewald, MD 🗽 Profile picture
5 Nov
Reading a book on the Black Death. Pretty amazing how they thought that praying and prostrating themselves would save them. Fairy tales about last rites saving people from eternal damnation bit the Chuch in the ass when most of the priests died/fled and people couldn’t be “saved”
A lot of people had common sense and avoided contact with other people. So only half of the population died.
Then the severe labor shortages allowed workers to demand higher wages. The 1% were outraged. The King tried to forbid people from getting paid more than their pre-plague wages. Exposed feudalism, religion, and royalty for the racket it is. worldhistory.org/Peasants'_Revo…
Read 4 tweets
Denise Dewald, MD 🗽 Profile picture
27 Oct
Sleep studies done in a small series of 11 post-acute covid patients showed REM without atonia in 4/11. This is considered a harbinger of neurodegenerative disease, such as Parkinson's.

We don't see this very often when we read sleep studies. Not good. pubmed.ncbi.nlm.nih.gov/33588262/
These patients got sleep studies because of suspicion of a sleep disorder. This wasn't a random sample of post-covid patients.

I really worry about patients who experience disrupted sleep or excessive sleepiness after COVID.
Atonia is lack of muscle tone. Your body is designed to not move while you are dreaming, so you don't act out your dreams. Acting out your dreams is bad and can lead to a lot of injuries.
Read 5 tweets
Denise Dewald, MD 🗽 Profile picture
27 Oct
Many people in the 1800s also said that we needed to accept living with cholera. Until they figured out all they needed to do was clean the water.

We don’t need to live with COVID. All we need to do is clean the indoor air.

Do better, ⁦@nytimes⁩ nytimes.com/2021/10/27/opi…
Cleaning the air can be done, and it is not hard. It will be a lot easier than bringing fresh water and sewers to every house (yes, they did that!).

Talk to aerosol scientists and indoor air quality researchers like @kprather88 @linseymarr @HuffmanLabDU @JimRosenthal4
Ventilation and filtration.

We need all indoor spaces to have at least 3 air exchanges an hour (right now your house probably has 0.3, which is why one person gets a respiratory illness in a family, everyone else tends to catch it).

Add filtration to reduce aerosols even more.
Read 6 tweets
Denise Dewald, MD 🗽 Profile picture
24 Oct
I deleted the tweet where I asserted that GOF is a crime against humanity, as it was too inflammatory. Many researchers truly feel that they are trying to do good, and this is not fair to them. I respect @Ryan_Mac_Phd and appreciate his input.
I do maintain serious reservations about this work, because I do not believe that it can be done safely with human/mammalian pathogens outside of BSL-4 containment. Laboratory-acquired infections occur. Human errors happen. The consequences are too high. ncbi.nlm.nih.gov/pmc/articles/P…
I also have serious concerns about GOF being used as a way to create bioweapons. I feel very strongly about this, as my father was ordered to do bioweapons research in the early 1960s when he was at Fort Dietrich.

Don't think it doesn't happen.
Read 5 tweets
Denise Dewald, MD 🗽 Profile picture
23 Oct
What is evil?

The crowd of antivaxxers/antimaskers/covid-denialists don't seem to actually understand this.

So I am going to start a thread for people to tell their family's personal experiences with real evil.

I will start. *Warning - this is horrifying stuff.*
My husband is from China. His mother was 12 years old when the Communists entered her village. She was forced to watch the Communists execute her father and uncle for the "crime" of being landowners.
His parents were sent to "re-education" camps for several years starting when he was a toddler. He was cared for by relatives.
Read 8 tweets
Denise Dewald, MD 🗽 Profile picture
15 Oct
Feeling jealous of people in the EU who can buy ventilating windows that also do heat exchanging for energy efficiency.

I feel like the USA is the backwater that it was in the 1800s.
People in the EU have access to such technological advancement because of -- here's the shocker -- laws to improve energy efficiency.

Here's an article on it: mag.ebmpapst.com/en/industries/…
Here they put little ventilation units into the window sill: siegenia.com/en/products/co…
Read 6 tweets

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