Hopefully, this isn’t occurring on a daily basis and you have discussed your symptoms with your cardiologists. In my personal experience, I have been in superventricular tachycardia numerous times, too many to count. My heart ranged anywhere between 120 bpm to 300 bpm. At the time, I was in my mid twenties and I didn’t want to have a pacemaker, so I prolonged seeing the cardiologist, which was the worst thing I could have done. To be honest with you, if you are having any symptoms like this, it’s best to see a cardiologist. I would never want you to experience an even higher heart or even worse than that. Leslie (Community Moderator)