The 2017 ACC/AHA guidelines eliminate the (JNC 7) classification of prehypertension and divides it into two levels:

• Elevated blood pressure with a systolic pressure between 120 and 129 mm Hg and diastolic pressure less than 80 mm Hg
• Stage 1 hypertension, with a systolic pressure of 130 to 139 mm Hg or a diastolic pressure of 80 to 89 mm Hg

Reference:

·        2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol 2018; 71:e127-e248.

·        https://emedicine.medscape.com/article/241381-guidelines

·        https://www.guidelines.co.uk/cardiovascular/nice-hypertension-guideline/454934.article

·        https://www.nice.org.uk/guidance/ng136