BLOOD PRESSURE CLASSIFICATION
Standards for assessment of high blood pressure, without regard to age, have been established by the
World Health Organization (WHO), as shown in the chart as below
：
mmHg
mmHg
Grade 3 hypertension (severe)
Grade 2 hypertension (moderate)
Grade 1 hypertension (mild)
High-normal
Normal
Optimal
120 130 140 150 160 170 180
Systoilc Pressure
D
iast
o
li
c
P
ressu
re
80
85
90
95
100
105
110
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