Long Covid imaging

In the last Long Covid talk that I attended and wrote about (here: Pulmonary Manifestations of Long Covid), the pulmonologist and intensivist says that one problem with Long Covid is that we do not have imaging that can “see” it.

That is, the chest x-ray looks normal, the echocardiogram may look normal (heart ultrasound), the chest CT scan may look normal, a brain CT or MRI may look normal, but the patient may still be tachycardic, feel exhausted, feel brain fog and have multiple other symptoms.

That pulmonologist listed five of the top mechanisms that are prolonged in the immune system. Most of the scientists and physicians are framing this as “immune system dysfunction”. I am not. I am framing it as “you were really really sick and your immune system is still on high alert and trying to protect you so you can recover”. Now wait, you say, how could chronic fatigue like symptoms protect me? Well, if you are exhausted, you can’t go to work and you’ll stay quiet at home most of the time and less exposure chance. But what about brain fog? Again, this will slow your interaction with other people and force you to rest and heal. But, you say, I don’t like it. Well, yeah. Patience. We call grumpy patients that are recovering “convalescents”. It is a good sign when they are grumpy and over it and just want to be better. That doesn’t mean I can make myself or anyone else heal faster.

The pulmonologist says that the best test is the six minute walk test. This is usually done by a respiratory therapist. The person walks in a circle for six minutes wearing a pulse ox, with the respiratory therapist doing regular checks. This distinguishes between the people who have primarily a lung issue from all the other issues. If the person is tachycardic (fast heart rate) but not hypoxic (oxygen level dropping), then it’s not primarily lungs though blood clots to the lungs sometimes have to be ruled out. One of the mechanisms in the immune system is microclots and an increased risk of blood clots. That can mean heart attack, stroke, or pulmonary embolus, a clot in the lungs. The microclots are suspected of causing some of the muscle fatigue and exercise intolerance, by clogging capillaries and reducing oxygen flow to muscle cells. Muscle cells do not like this at all.

I have done my own quick walk test with patients since 2003, when I had terrible influenza. About a week after my influenza started, with the temperature of 104 and heart rate at 100 at rest and 135 walking, my temperature came down. However, the fast heart rate continued. Normal heart rate is 70-100 and 135 walking will make you feel exhausted. I lay on the couch and could barely make my kids dinner for two months. It resolved then. I read a book about influenza and thought that I had “influenza viral pneumonia” where there is lung tissue swelling, reducing the air spaces, after influenza.

My quick walk test in clinic is to check a sitting oxygen level and heart rate and then have the person walk. I would have them walk up and down a short hall three times then sit down. When they sat, I watched the pulse oximeter recovery. Some people would jump from a resting heart rate of 62 to a walking heart rate of over 100, say 120. Their oxygen level could stay normal or it could drop. If they dropped below 88, I would get home oxygen and forbid them to return to work. If their oxygen level held, then they needed to rest until their walking heart rate stayed under 100 and they were no longer exhausted by gentle or normal activity. If they return to work with a walking heart rate of 120, they will be exhausted and are more likely to get a secondary pneumonia or have other problems. The heart does not like to run at 120 all the time. You can see why a person who already has some coronary artery blockage would be more likely to have a heart attack if they get pneumonia from influenza or Covid-19.

The conferences I am attending are talking about “targets” in the immune system. That is, new drugs. I think the science is wonderful and amazing, but I also think we need to step back and say, this is a really really bad infection and some people need a lot of support and reassurance and time to heal. Reassure them that even though they have not yet returned to normal, the immune system is working hard to protect them from other infections and it is saying very very loudly that they need to rest. Rest, recuperate and trust the immune system. Some things need immediate treatment, especially blood clots, heart attacks and strokes, but once those are ruled out, we need to support people through their convalescence and healing.

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The photograph is from April 2021, a few days after I was put on oxygen. A selfie.

Covid-19: Long Haul III

The CDC has guidelines for Long Covid and it can qualify for disability in the United States.

Here: https://www.cdc.gov/coronavirus/2019-ncov/long-term-effects/index.html

And here: “As of July 2021, “long COVID,” also known as post-COVID conditions, can be considered a disability under the Americans with Disabilities Act (ADA). Learn more: Guidance on “Long COVID” as a Disability Under the ADA, Section

Here is the list of “most common” symptoms from the CDC:

General symptoms

  • Tiredness or fatigue that interferes with daily life
  • Symptoms that get worse after physical or mental effort (also known as “post-exertional malaise”)
  • Fever

Respiratory and heart symptoms

  • Difficulty breathing or shortness of breath
  • Cough
  • Chest pain
  • Fast-beating or pounding heart (also known as heart palpitations)

Neurological symptoms

  • Difficulty thinking or concentrating (sometimes referred to as “brain fog”)
  • Headache
  • Sleep problems
  • Dizziness when you stand up (lightheadedness)
  • Pins-and-needles feelings
  • Change in smell or taste
  • Depression or anxiety

Digestive symptoms

  • Diarrhea
  • Stomach pain

Other symptoms

  • Joint or muscle pain
  • Rash
  • Changes in menstrual cycles

There are recommendations for a work up by physicians. Depending on symptoms, this may include labs, ECG, echocardiogram (heart ultrasound), CT scan and other tests.

A friend has just gone through those four tests . They are “normal” except for her heart rate. At rest her heart rate is 70 with a normal oxygen level. Walking, her heart rate jumps to 135. Over 100 is abnormal in this athlete who is NOT exerting heavily.

So WHAT is going on with NORMAL testing? I think this is “Covid-19 Viral Pneumonia”, a complication of Covid-19, just as “Influenza Viral Pneumonia” is a complication of influenza. Ralph Netter MD has an illustration of lungs from a person who died of influenza viral pneumonia: the lungs are swollen and inflamed and bruised. WHY is the testing “normal” then? The swelling is throughout the lungs, so a chest x-ray sees it as all the same density and a CT scan also sees it as all the same density. The lungs may have mildly decreased breath sounds, but the sounds are even throughout the lungs. The useful TEST is a walk test. I have tested patients with “walking pneumonia” in clinic for years: get a resting heart rate and oxygen level. Then have my patient walk up and down the hall three times and sit back down. Watch the heart rate and oxygen level. If the heart rate jumps 30 beats up or is over 100, the person needs to continue rest until the heart rate stays under 100 or jumps less than 30 beats. It is important to observe the heart rate until they recover. Sometimes the oxygen saturation will drop as the heart rate comes down, and some people qualify for oxygen. Steroids do not seem to work for this. The length of time to healing is not totally surprising, because a lobar pneumonia that is visible on chest xray takes 6-8 weeks to fully clear. It is not too amazing that a bad walking pneumonia could also take 6 weeks or more to clear. If the person returns to work too soon, they prolong the lung inflammation and they are at risk for exhaustion and for a secondary pneumonia. The treatment is REST REST REST and support.

Do they need oxygen? Currently oxygen is covered only if the person’s oxygen saturation drops down to 88%. However, I think that oxygen would help recovery and make them less exhausted. With my first walking pneumonia, which was influenza, my walking heart rate was 135 and my resting heart rate was 100. Both were abnormal for me. Neither I nor my physician could figure it out. This was in 2003. I did look in my Netter book: I took one look at the painting of the influenza lungs and shut the book. “Oh.” I thought. “That’s why I can’t breathe.” The image is here, though I wish it were bigger.

It took two months for my heart rate to come down, the lung swelling to improve, and me to return to work. I read the text of Dr. Netter’s image a year later and then I read an entire book about the 1918-1919 influenza. Since then I have walked people who come in complaining of exhaustion after a “cold” or “bad cough”. Viruses can cause this and so can bacteria: mycoplasma pneumonia, chlamydia pneumonia, pneumococcal pneumonia, legionella and strep A. If the fever is gone, the infection has probably resolved, but it still can take days or weeks for the lung tissue to recover.

For Covid-19, I would add a third test: walking with weights. We test cardiac patients by asking if they can carry two bags of groceries up a flight of stairs. That is 3 Mets, a measure of the heart load. We need to measure the lung load as well. If the lung tissue is swollen, the amount of airspace is cut down and can be half normal. The heart attempts to take up the slack. The person may tolerate a heart rate of 135 for a while, but it is like running a marathon. If they are older or have heart disease, this can trigger a heart attack. I would walk the person carrying hand weights, and see the recovery.

Also, brain fog is unsurprising. If your oxygen level is borderline, it is darn hard to think. I write really strange songs when I am hypoxic. I get goofy and feel weird. The fast heart rate also feels like anxiety: I think that the body is trying to tell me to rest.

The definition of Long Covid is symptoms after 30 days. Please see your physician if you are still ill and continue to have symptoms.

Blessings.

Here is a recent article about T-cells and inflammation in the lungs of Covid-19 patients: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8460308/

and this: https://www.frontiersin.org/articles/10.3389/fimmu.2020.589380/full

sober garden

For the Ragtag Daily Prompt: garden.

We have beer gardens at many local events. Centrum music, the Wooden Boat Festival. People have to show identification to get into the beer garden and must keep the drink in there.

I want to start a Sober Garden as well as a Beer Garden. Let’s have a substance free area, roped off, for families and those who are choosing not to use substances, alcohol, opioids, tobacco, meth, whatever. At the events with families, the Beer Garden is roped off, but let’s rope both off. Let us have a Sober Garden and have food trucks and drinks and welcome families and welcome people who are not drinking alcohol or using other substances.

Let’s bring children out to the music and let families set a conscious example. There is no stigma if it is a Sober Garden for families and to support the whole community, including those recovering from addiction. Let us make it conscious and attractive.

When we rope off the Beer Garden and check identification to get in, aren’t we sending the message to the youth, especially teens, this is special, you are not allowed. Let us reverse that and have a bracelet for those going in to the Sober Garden. A sticker, a garden for families, a garden for people healing, a garden for making a different choice.

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music by Mike and Ruthy: simple and sober. https://www.youtube.com/watch?v=gsFlHuhDP0A

My garden waiting under snow for spring.
Spring buds in the ornamental plum, with a bird.

Sometimes it takes a while to warm up to an idea. But spring will come and warmth.