22
Standard Blood Pressure Classication
Below illustrates the standard blood pressure classication for adults made by
World Health Organisation (WHO) and International Society of Hypertension (ISH)
in 1999.
DIA (mmHg)
60
80
90
100
110
90 120 140 160 180
SYS (mmHg)
Low
Normal
Pre-High
High (mild)
Grade 1: Hypertension
High (moderate)
Grade 2: Hypertension
High (severe)
Grade 3: Hypertension
SYS DIA
Low <90 <60
Normal 90-120 60-80
Pre-High 120-140 80-90
High
(mild)
140-160 90-100
High
(moderate)
160-180 100-110
High
(severe)
>180 >110
Caution:
• Only a doctor can tell you your normal blood pressure range and
the point at which you are at risk. Consult your doctor to obtain
these values.
• If the measurements taken with these products fall outside the
range, consult your GP/doctor for advice.
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