Normal adult systolic blood pressure should be less than or equal to 140mmHg( 18.6kPa) and diastolic blood pressure should be less than or equal to 90mmHg( 12kPa).
The systolic blood pressure was141~159mmhg (18.9 ~ 21.2kpa) and the diastolic blood pressure was 91~ 94mmhg (12./). When diagnosing hypertension, the blood pressure must be measured several times, and the average diastolic pressure of at least two consecutive times is above 90mmHg( 12.0kPa), so as to diagnose hypertension. Patients with hypertension only once may not be diagnosed, but follow-up observation is needed.