Mine was mostly in the 80s and 90s resting. I have my own cuff and test it regularly. I don't have high blood pressure. Then, out of the blue in December I was woosy then fainted (and banged my head). Thought nothing of it, but went to the GP the following day at the insistence of my hubby. In his waiting room I fainted again!. Most unusual for me. GP did an ECG and noted some ventricular ectopic heart beats, and my heart rate was 128. Because irregular heart beats combined with tachycardia can be dangerous, and might have been the cause of the faints, he sent me to A&E for some heart monitoring. (quicker to get the monitoring as an in patient than an outpatient) Cutting a very long story short I didn't get the monitoring but was prescribed Atenolol (Beta Blocker). I have since had a 24 hour ECG which showed a mean heart rate of 60 something and the ectopics gone. Just one very short burst of A Fib - less than a few seconds. However, the Atenolol has pushed my base line blood sugars up about 0.5mmol/l and I'm only on the lowest possible dose. I have an appointment next week to discuss coming off them now things have settled down.
The point of my essay is, if you have tachycardia and irregular heart beats, it can be serious, so it needs investigating.