Final answer:
Normal blood pressure is less than 120/80 mm Hg. Elevated blood pressure falls within the range of 120-129 systolic and less than 80 diastolic. Hypertension is defined as blood pressure measurements of 140/90 mm Hg or above and should be treated accordingly.
Step-by-step explanation:
According to the American College of Cardiology and American Heart Association, normal blood pressure is considered to be less than 120/80 mm Hg. Elevated blood pressure falls within the range of 120-129 systolic and less than 80 diastolic. Hypertension, or chronically elevated blood pressure, is defined as blood pressure measurements of 140/90 mm Hg or above and should be treated accordingly.