Jnc Vi Classification Of Hypertension

Category* Systolic (mm Hg) Diastolic (mm Hg)

Optimal* <120 and <80

Normal <130 and <85

High normal 130-139 or 85-89 Hypertension'

Stage 1 140/159 or 90/99

Stage 2 160/179 or 100/109

*Not taking anithypertensive drugs and not acutely ill. When systolic and diastolic blood pressures fall into different categories, the higher category should be selected to classify the individual's blood pressure status. For example, 160/92 mm Hg should be classified as stage 2 hypertension, and 174/120 mm Hg should be classified as stage 3 hypertension. Isolated systolic hypertension is defined as systolic blood pressure of 140 mm Hg or greater and diastolic blood pressure of less than below 90 mm Hg and staged appropriately (eg, 170/82 mm Hg is defined as stage 2 isolated hypertension). In addition to classifying stages of hypertension on the basis of average blood pressure levels, clinicians should specify presence of target organ disease and additional risk factors. This specifically is important for risk classification. 'Optimal blood pressure with respect to cardiovascular risk is below 120/80 mm Hg. Unusually low readings should be evaluated for clinical significance. 'Based on the average of two or more readings taken at each of two or more visits after an initial screening. JNC—Joint National Committee.

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