Hi @rr1967 As some of the others have mentioned Magnesium and Potassium are important to Heart health. As it sounds like you watch your diet Im kind of a firm believer in using foods rather than supplements, but I have taken supplements when diet did not work. The tough part is to have a good level but not overdo it. Have you been tested for these 2 minerals ? I know when my arrythmias got hard to manage my EP Cardiologist was watch them very closly trying to get the levels as high as possible.
The other thing I found helped as it was a contributing factor was alcohol. I finally gave up completely as it just was not worth it. I'm glad I did as it was a requirement when I had to face transplant and it's not allowed with transplant drugs. I know you're not close to needing that, but it is something that affects heart rhythm. So if you already have a EP cardiologist maybe as them their thoughts on magnesium and potassium. I hope that helps. I also had episodes of PVC's which were not to your level, but I know they are not confutable.
Blessings