I have been diagnosed with svt, non sustained vt, have PVC,s regularly. In addition 2 leaky valves. These conditions happen numerous times throughout the day. I take 3 heart meds, one being tykosyn, a antiarithmic med. I am a club level B rider. I get short of breath on some climbs and don't have the stamina I would like but am thankful for what I have. I am 64 years old and have been riding for 5 years, in season about 100 to 150 mi a week. My dr wants to do a catheter ablation but am reluctant to do in case it makes things worse. I hope you find this information helpful and ride safe.