An adult more than the age of 20 years who has a Systolic Blood Pressure of equal or more
than 140 mm of mercury and a diastolic BP of equal or more than 90 mm of mercury on two
occasions when recorded in a relaxed sitting position is considered hypertensive.
A Systolic Blood Pressure between 120 to 139 or Diastolic Blood Pressure between 80 to 89 is
considered pre-hypertensive and requires to watch for hypertension in future.
