Systolic Pressure (Top Number) mmHg | Diastolic Pressure ( Bottom Number) mmHg | |
Normal | 120 | 80 |
Pre-Hypertension | 120-139 | 80 to 90 |
Hypertension Stage I | 140-159 | 90 to 99 |
Hypertension Stage II | 160 or more | 100 or more |
For adults over 18 years of age. For children, special reference tables are availa ble with paediatricians. | ||
Source: The Seventh Report of the Joint National Committee on the Prevention, Detection, Evaluation and Treatment of High Blood Pressure. (published by the National Heart, Lung and Blood Institute, USA), May 2003. | ||