Hello and thank you for using HCM.I carefully read your question and I understand your concern.I will try to explain you something and give you my opinion. In your case we have to deal whith two different problems but strongly related with each other,hypertension and rhythm issue. We talk about hypertension if we have mean value that exceeds 140 / 90 mmHg.A person might have high value during emotional and physical strees so its mandatory to judge on mean values . Fast heart beats might be a simple sinus tachycardia.This mean that your heart beats over 100 beat for minute.But it might be another kind of arythmia like atrial fibrillation.It means that your heart beats in a chaotic way. Hypertension might lead to fast heart beats but also an arythmia might rise blood pressure. So, if I was your treating doctor I will recommend some examination like an electrocardiogram, a cardiac echo to evaluate heart function and walls, a full blood analyze, a holter rhythm and pressure monitoring. This are not urgent examination, you can wait until the apointment with your doctor. Only if it happens again to have fast heart beats that last for several minutes and if they seems irregular I would recommend you to go directly to the emergency room. In this case, through an electrocardiogram we can catch a rhythm issue if it is any. Hope I was helpful.Wish you good health. Best regards.