This is very promising! (And I don't mind at all being shown up as a total ignoramus about cardiac issues.)
Hm? No, you haven't been shown up and certainly weren't a total ignoramus. What I've got doesn't technically happen. Everyone seems to agree with this. If you exercise, and feel comfortable while exercising, then you go off, a bit tired, but otherwise fine. You don't have a crash afterward. That's not even *normally* abnormal. It doesn't make sense.
The beta blockers are a total shot in the dark. But they help with anxiety, they help with migraines, and some of my problems kinda map to anxiety and migraines. And, if feels like my heart is overworking itself - the symptoms are the same as an overworked heart. So, it makes sense if they help, but, it's not something that, e.g., most doctors (if any) would know about.
I've known people with various odd reactions - as I said, quite a few things seem to be the result of people either mis-perceiving physical reactions as emotions, or vice versa, and this phenomenon doesn't seem to be as well-known in the medical community as it ought to be. So I sort of jumped to a conclusion, which of course I'm not even vaguely qualified to do :-(
But as long as the beta blockers help, it seems you and your doctors are on the right track, and I hope it just keeps getting better from here.
Oh, it wasn't an unreasonable conclusion. It's just that, in my case, it finally drilled through my thick skull that I was reliably triggering emotional reactions that were like despair, the kind that people often feel when exhausted. And I know what I can handle emotion-wise - I've been having to learn to deal with more and more emotional shit for a few years now. So I could rule out emotions, because I can handle "just" emotional energy.
(I'd better - most of my shamanic work goes through emotional energies :-) .)
So, I could rule out emotions driving the mental/physical state, just because I was on the inside. And then, when I found that exercise could reliably trigger emotional "pulses" - "hey, I *felt* that happen - I just went from feeling okay to feeling close to despairing" - that clinched it for me. It had to be a physical-feedback-thingy (I believe that's a term of art :-) ). And if it was "just" an emotional reaction, well, I'd dislike it, but I'd handle it. And it wouldn't cause me to notice that, wow, I'm breathing heavier after 3 flights of stairs, rather than just barely noticing.
The stuff you were bringing up was good stuff to consider - it's just that I'd been working on the puzzle for a long time already, and hadn't bothered to mention most of the groundwork I'd already laid.
Not so much that you "can't handle" emotions, just that you might interpret them as something else - either taking the physical sensations that accompany emotion for some kind of physical problem, or interpreting one emotion for another. For example, I have a tendency to interpret the physical sensations of mild fear as excitemnt, and think of them as being positive. This probably explains a lot :-( There's also "hangry", and, yes, when I'm physically depleted and exhausted, it's rather hard to stay upbeat.
Do you know if they are cumulative? I just started on a beta blocker two weeks ago. My energy level is down but that's about all I've noticed so far.
They have some build up effect, and most meds have an initial ramp up where your body adjusts to them. But they don't have much effect past 2-3 days after stopping them.
It's normal to have some level of energy drop if you are on them for high blood pressure - they're intentionally designed to slow down your heart a bit, and if your heart is a bit slower, your body is going to take some time to adjust to them (assuming you do adjust - not everyone does, just like with any medication).
I'm on a very low dose of them, about a quarter of a starting dose for blood pressure management.
I'm really glad that the primary doc is listening to you & tried beta blockers. and that they appear to be helping. I can't believe (or really, I can) that the cardiac doctor completely dismissed your symptoms just because your tests were clear. Technically, there is nothing wrong my heart (all of my EKGs, stress tests, sleep tests, etc have been fine) ... but I've been on beta blockers for about 5 years because of some unusual symptoms(& bad family history, in my case, is a factor).
Nod. I just wish that the cardiac doc could have provided some validation for this. I hate experimenting. Then again, it sounds like some of us have to - there's no defined diagnosis for this (or, it sounds like, for what you have).