Hi Coleen -
You should also consider the idea that the bananas may be the placebo effect. It sounds like you already know that bananas contain an electrolyte important to the electrical function of the heart. But have you had your blood tested to see if you really are potassium deficient?
So you understand that I know the shoes you're walking in, I've had months where I had tens of thousands of PVCs ("flutters") all day, every day. At one point I started drinking lemon balm tea because I'd done some online research that showed that it might help, and at the very worst it couldn't hurt. It's supposed to calm and relax, and I know that stress is one of my triggers. I thought I'd found the miracle cure! Fast forward a few years, and I still drink the tea nearly every day (I like the taste), but I can miss a few days and my PVC load doesn't change. I'm convinced that because I thought it was going to work, it worked. But in time, that mental connection, de-stressing when drinking the tea, wore off. I would get lots of PVCs even if I drank 8 cups of that tea.
So I would certainly see about getting an electrolyte test done, but also look at other factors that might be instigating your palpitating heart.
Jeff
Bananas aren't as potassium rich as people believe them to be. Other potassium rich foods are things like almonds, orange juice, green veggies. Do a Google search, you will find tons of stuff to substitute.