Table 1 The classification of blood pressure and hypertension
Category | Systolic blood pressure (mm Hg) | Diastolic blood pressure (mm Hg) | ||
|---|---|---|---|---|
Normal blood presssurea | <120 | And | <80 | |
Prehypertension | Stage 1 | 120–129 | Or | 80–84 |
Stage 2 | 130–139 | Or | 85–89 | |
Hypertension | Stage 1 | 140–159 | Or | 90–99 |
Stage 2 | ≥160 | Or | ≥100 | |
Isolated systolic hypertension | ≥140 | And | <90 |