Classifications of Blood Pressure (United States) Blood Pressure Categories: Normal (desirable) Systolic Blood Pressure (Top Number) in mm Hg: Less than 120 Diastolic Blood Pressure (Bottom Number) in mm Hg: and Less than 80 Blood Pressure Categories: Elevated Systolic Blood Pressure (Top Number) in mm Hg: 120–129 Diastolic Blood Pressure (Bottom Number) in mm Hg: and Less than 80 Blood Pressure Categories: Stage 1 Hypertension Systolic Blood Pressure (Top Number) in mm Hg: 130–139 Diastolic Blood Pressure (Bottom Number) in mm Hg: or 80–89 Blood Pressure Categories: Stage 2 Hypertension
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