Arrhythmia messing up all of my Sense 2 stats

[RidgeRunner-1]

I just started wearing my Fitbit sense 2 watch mainly so that I could track my heart rate at night which goes into bradycardia. During the day I have a problem with bradycardia when laying or reclining semi elevated, slight tachycardia to normal heart rate when sitting, and tachycardia anytime I stand up and I'm active. Which, even though it is all the symptoms of POTS, my cardiologist keeps insisting it is not POTS. He also insists that the data from a smartwatch like this is less than useful for anything medical related.

I would think that your cardio load and tracking your heart rate in real time, and other features of the smartwatch, would be extremely useful when trying to diagnose medical conditions, but I'm not a doctor so maybe normal logic doesn't play into this. Maybe doctors, cardiologists in a particular, have a different metric of logic that they go by. Whatever.

My primary question today deals with the cardio load. The Fitbit, it seems, is unable to differentiate between your heart rate is up in the exertion zones because of exercise or you are just standing there but in tachycardia. So it kind of gets confused and doesn't know what to do, it seems to me.

It seems to me that the cardio load would be helpful, but it is all over the place on what it tells you from day to day you should shoot for as far as fitness goes on your cardiac load.

When I first started using the device it set my target rate on cardio load from 2 to 10. It kept readjusting this higher, but then I would constantly exceed the upper limit of the cardio load.

And that is where things would get really confusing, it would start giving me little pop-up notices that I had really pushed myself and I needed to take a break, yet it would adjust my cardio load higher because the other metric the readiness score it gives you each day would be up, so it would increase the cardio load targets.

It was doing this even after I had to go to the ER for chest pains and other symptoms, and the blood work showed that my heart enzymes were up. Because when I do any sort of activity, such as going to the store for groceries and walking around the store, my heart rate shoots way up into the high exertion/workout ranges even though I'm just walking, usually walking very slowly like an old man to try to keep my tachycardia from going too high.

But then, it will show my readiness scores the next day is being higher, and now it is setting my cardio load targets range much higher than the 85 that it reached on the day when I was grocery shopping and pushed it too hard apparently on my heart rate.

I still think that cardio load could be a good thing to use to make sure that one does not overdo it, disregarding any pop-up messages that tell you you are pushing too hard and you need to stay out of the gym even though you are sedentary and have not been to the gym in 5 years or more, and you are not working out you are just walking around slowly grocery shopping and such. And also disregarding the cardio load Target ranges, as they would be meaningless in a situation like mine.

I am just wondering if there is any data about when you have medical conditions at what point your cardio load is pushing it too hard for health reasons not training reasons, such as pushing it too hard and you need to get home and lay down.

I am under medical treatment, and I am not asking anyone for medical advice in here, I am just asking if there is any information that would let a person with health conditions know when the cardiac load is indicating it might be time to take a break for health reasons. Thank you for any assistance anyone can give.

Moderator Edit: Clarified subject

[JohnnyRow]

Far from an expert on any of this so feel free to take this with little regard.  Cardio load is a fairly new feature here.  I think you are giving a way too much credit or intelligence.  My take is that many people with normal hearts find it confusing and sometimes seemingly in contradiction with other measurements here, and would love to be able to have a way to get rid of it from the phone app.