Question Hi, I'm 27years old female. No known case of heart diseases. Mother has hypertension and father has asthma only. On the 5th July i was having palpitation my heart rate was 144 and ecg/ekg was sinus tachycardia. Doctor advised to do repeat ecg, i did. Everytime i'm having palpitation my pulse is 90-109 perminute.Ecg shows Normal sinus rhythm, Rightward axis, Borderline ECG. Doctor said it is normal but i still feel worries. Please help me to solve it and what treatment and prevention i should take.