Terms of Use; About. Contact Us; About WebMD; Careers; Newsletter; Corporate; WebMD Health Services; Site Map; Accessibility; WebMD Network. Medscape; Medscape Reference; MedicineNet; eMedicineHealth; RxList; OnHealth; BootsWebMD; WebMDRx; First Aid; WebMD Magazine; WebMD Health Record; Dictionary; Physician Directory; Our Apps. WebMD Mobile; WebMD App; Pregnancy; Baby; Allergy; Medscape; TheHeart
Once you have your average blood pressure, the next step is to see where the numbers fall. Generally, anything under 120/80 is considered a good blood pressure. Average numbers between 120/80 and 139/89 are considered prehypertension.. If the average of your numbers is more than 140/90, you have high blood pressure.
The bottom number, called the diastolic pressure, is the measurement as the heart relaxes between beats. Normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic pressure of less than 80 mm Hg, or 120/80 mm Hg, according to the American Heart Association (AHA).Having a blood pressure greater than 140/90 mm Hg is considered high blood pressure or hypertension.he bottom number, called the diastolic pressure, is the measurement as the heart relaxes between beats. Normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic pressure of less than 80 mm Hg, or 120/80 mm Hg, according to the American Heart Association (AHA).