What are the standard Blood Pressure Classifications?

The World Health Organization (WHO) and the International Society of Hypertension (ISH) jointly developed the following blood pressure classification. This classification, however, this is only a general guideline because your optimum blood pressure depends on your age, morbidity, and treatment strategy by a physician. Consult your physician to determine your optimum blood pressure.

	Systolic (mm Hg)	Diastolic (mm Hg)
Optimal	Less than 120	Less than 80
Normal	Less than 130	Less than 85
High-Normal	130 to 139	85 to 89
Stage 1 Hypertension (mild)	140 to 159	90 to 99
Stage 2 Hypertension (moderate)	160 to 179	100 to 109
Stage 3 Hypertension (severe)	180 or greater	110 or greater

Source: http://www.caregiver-helpline.com/NewFiles/bloodpressuremonitors.html