Presently, if you are having 5000-10,000 PVC's a day, I would surmise that you're having frequent runs of VT that are causing your symptoms. In older patients, VT is usually caused by scarring of the heart muscle from prior heart attacks and carries a far worse prognosis that what you appear to have. Unfortunately, I could find no trials that have examined your particular problem and I couldn't find anyone who is doing cutting edge research on this. If not, maybe you could arrange to be seen by the cardiologists there who may want to repeat your EP study completely off medcations. In the meantime, I would suggest that you avoid caffeine, alcohol, and tobacco of any kind and see what happens with your symptoms.
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