Would 120/90 be considered a high blood pressure for a teenager?
Blood pressure at 120/90 is to be considered high at least from the diastolic point of view. Ideally it should be 120/90. Sometimes the diastolic may come a little higher in case of tension, smoking, any other condition (which does not appear to be in your case), restlessness, and a number of other factors. Yes, it may be due to a defect in the apparatus. This is certainly not uncommon. I have checked blood pressure thousands of times. Now I am talking about measuring with the digital apparatus. At no time would two simultaneous readings be the same. This was the the older type mercurial apparatus called the sphymomanometer and which is still considered to be more accurate. People try to avoid it because of the difficulty in measuring the blood pressure specially in the self operating kit. So first of all you have to be sure if your diastolic pressure remains around 90 (minus or plus 2 points). You must do that at least twice a day for about four or five days and if it remains around 9
