General Discussion

take it easy and take good care of yourself.

I want to suggest, too, that you check out information on supplements that might help, especially CoQ10, and ask your doctors whether you should take it. Possibly they already recommended it. Just one article about it:

https://pubmed.ncbi.nlm.nih.gov/33441012/
https://www.tandfonline.com/doi/10.1080/15412555.2020.1849084?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed#d1e565

Twenty years ago my mom started developing heart failure after fifteen years of other heart problems. I asked her cardiologist at the heart clinic about CoQ10, which I'd read could be helpful for both heart failure and COPD (which she didn't have, despite having been a smoker until she had heart trouble). He approved of her taking it, said other patients of his took it. I asked why he hadn't recommended it and he said something about it not yet being standard enough treatment that the clinic wanted their cardiologists to mention it first to patients. Anyway, Mom recovered from heart failure after taking CoQ10.

She took quite a few supplements, always with her cardiologist and GP's approval. I've never forgotten an appointment where her cardiologist was showing her off to another cardiologist and an intern who had stopped by, explaining how many supplements she was on and how little medication, just one med, a blood thinner - and it was painfully obvious that they weren't interested in hearing about supplements. Mom's cardiologist once mentioned Canadian cardiologists he knew who were doing research on supplements, and he sounded envious.

She lived to 96, like your parents - passed away a few months before what would have been her 97th birthday. She'd had phlebitis in her 30s, failing kidneys in her 40s (supplements helped there, too), and had first developed heart trouble (which runs in the family, including my siblings) at 70.

A diagnosis is not a sentence. Health can almost always be improved. And it helps to have as much information as possible.