You might need some potassium - orange, banana, baked potato, red pepper. You never report eating fruit or veg. Your sodium count might be okay, but it needs to be balanced with potassium - not 1 for 1, but both minerals are necessary for a body's electrical system to function. Otherwise youll think you have a dead battery! Or Pedialyte or gatorade. I personally would die if my heart rate was that high all the time. I thought your dr put you on a beta blocker? It should be controlling that and your blood pressure.