Hypertension staging:
Systolic Pressure (mm Hg) Diastolic Pressure (mm Hg) Normal < 120 < 80mm Hg
Pre-hypertension 120-139 80-89
Hypertension stage 1 140-159 90-99
Hypertension stage 2 ≥ 160 ≥ 100
Hypertensive crisis – emergency ≥ 180 ≥ 120
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