How To Get Rid Of Sinus Tachycardia I Have Supraventricular Tachycardia Or Sinus Tachycardia... Can Someone Help Me?

I have Supraventricular Tachycardia or Sinus Tachycardia... can someone help me? - how to get rid of sinus tachycardia

I had chemotherapy after a few years ago told me that they now have both a supraventricular tachycardia or sinus tachycardia ... more tests to determine what, but I'm 20 years old and I'm sick ... 120 ppm now, I'll take beta-blockers, but I find the episodes. Can someone help me with a reason why he was not free from spells? Even if I have time (slight intoxication, dizziness, neasua, achyness, headache, shortness of breath, and 140 beats / min +) I plan out (like 20 minutes or so) or should I go to the emergency. I had like 3 -4 episodes (you can use the loss of arms and legs by a lack of oxygen control) HELP PLZ! TY!