I have been suffering from fast heart rate since i was 11 (now im 22). For the last two years it has began to affect my day to day life. Including studies and work. I will get out of breathe so easily, sweat and have hot flushes and very dizzy at times to the point where i will almost black out. My ecg showed a heart rate of 170 which is most of the time including during my sleep. My rythem is normal but it is this fast heart rate all the time that is making my life difficult. Im on beta blocker now but do you think there is a issue that is being overlooked here? Thank you