How much is hypertension?

Normal blood pressure should be ≤ 140/90. Your mother's blood pressure must be high. The criteria for diagnosing hypertension are: blood pressure measurement ≥ 140/90 for three times on different days (at least two weeks apart), and diagnosis can be basically made. The doctor you contacted is unqualified. The highest scale of mercury sphygmomanometer is 300 mm Hg, but if it reaches this level, there may be a big problem. I wonder if people are still there. In my medical career, I have seen the highest high pressure of 280. Compared with diastolic blood pressure (low pressure), systolic blood pressure (high pressure) is more harmful to people. Hypertension in many elderly people is only manifested as an increase in systolic blood pressure (hypertension) and normal diastolic blood pressure, but it still needs to be treated according to hypertension. In the case of good tolerance, it is a general treatment principle to control high pressure within a safe range first.