Sometimes medical articles are SO IRRITATING! Like this:
Symptomatic Long COVID May Be Tied To Decreased Exercise Capacity On Cardiopulmonary Exercise Testing Up To Three Months After Initial SARS-COV-2 Infection
Healio (10/18, Buzby) reports a 38-study systematic review and meta-analysis “suggested with low confidence that symptomatic long COVID was associated with decreased exercise capacity on cardiopulmonary exercise testing up to 3 months after initial SARS-COV-2 infection.” According to the findings published in JAMA Network Open, “underlying mechanisms may include but are not limited to deconditioning, peripheral mechanisms, hyperventilation, chronotropic incompetence, preload failure and autonomic and endothelial dysfunction.”
Wouldn’t it be nice if they believed the patients?
Let’s break this down. What does it all mean? Ok, the “low confidence” irritates me because it implies that the physicians can’t believe the patients who say “hey, I am short of breath and have a fast heart rate and get really fatigued if I try to do anything!”
I have had my fourth bout of pneumonia with shortness of breath and tachycardia. This time, since I am older, I had hypoxia bad enough to need oxygen. This is the FIRST TIME that some physicians have actually believed me. They believed the pulse oximeter dropping down to 87% and below, with a heart rate in the 140s, but they did not believe me and some accused me of malingering, for the last 19 years. Can you tell that I am a little tiny bit annoyed? If my eyes shot lasers, there would be some dead local physicians. And I AM a local physician, disbelieved by my supposed peers.
Let us simplify this gobbdygook: “underlying mechanisms may include but are not limited to deconditioning, peripheral mechanisms, hyperventilation, chronotropic incompetence, preload failure and autonomic and endothelial dysfunction.” The way I think of it is that sometimes a pneumonia will cause lung tissue swelling. Ok, think of the air space in your lungs as a large balloon. Now the wall of the balloon swells inwards and suddenly there is half as much air space. Guess how your body takes up the slack? The heart goes faster and you have tachycardia. This is a very simple way to think about it. I have tested patients who complain of bad fatigue after an upper respiratory infection with a very simple walk test. 1. I test them at rest, heart rate and oxygen saturation. 2. I walk them up and down a short hallway three times. 3. I sit them back down, and watch the heart rate and oxygen saturation. I watch until they are back to their seated baseline.
A friend tested recently and his resting heart rate was 62. After walking, his heart rate is in the 90s. H does not have a pulse oximeter, but his oxygen level is probably fine. However, that is a big jump. He has had “a terrible cold” for 8 days. I would bet money that his heart rate normally doesn’t jump that much. He still needs recovery time and rest.
In clinic, I had people who were ok at rest but needed oxygen when they walked. We would get them oxygen. More often, they did not need oxygen, but they were tachycardic. When they walked, their heart rate would jump, over 100. Normal is 60-100 beats per minute. If they jumped 30 beats or jumped over 100, I would forbid them to return to work until their heart rate would stay under 100 when they walked. If they went back to work they would be exhausted, it would slow healing, and they might catch a second bacteria or virus and then they could die.
Patients did not need a pulse oximeter. I would teach them to take their own pulse. The heart rate is the number of beats in 60 seconds. I have trouble feeling my own wrist, so I take mine at my neck. It’s a bit trickier if someone has atrial fibrillation but the pulse oximeters aren’t very good with afib either.
When I have pneumonia, my resting heart rate went to 100 the first time and my walking heart rate was in the 140s. I had influenza and felt terrible. My physician and I were mystified. It was a full two months before my heart rate came down to normal. I was out of shape by then and had to build back up. If I tried to walk around with my heart at 140, I was exhausted very quickly and it also felt terrible. The body does NOT like a continuous fast heart rate and says “LIE DOWN” in a VERY FIRM LOUD VOICE. So, I lay down. Until I recovered. For a while I was not sure if I would recover, but I did. This time it was a year before I could go to part time oxygen.
The fatigue follows the heart rate. Tachycardia is not good for you long term. If the heart is making up for reduced air space in the lungs, it doesn’t make sense to slow the heart rate with drugs. You NEED the heart to make up for the lungs. You need to rest, too!
Blessings and peace you.
The photograph is Elwha, helping me knit socks. With the bad air from the fires and my still recovering lungs, I am staying indoors and knitting socks .