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HEM-7300-WE_main.book 40 ページ 2011年11月10日 木曜日 午前11時39分
9.Some Useful Information about Blood Pressure
200
150
100
50
6
12
Example: fluctuation within a day (male, 35 years old)
Classification of Blood Pressure by the World Heath Organization
The World Health Organization (WHO) and the International Society of
Hypertension (ISH) developed the Blood Pressure Classification
shown in this figure.
Systolic blood pressure
(mmHg)
180
160
140
130
120
Optimal blood
(target value)
This classification is based on the blood pressure values measured on
people in a sitting position in outpatient departments of hospitals.
* There is no universally accepted definition of hypotension. However,
those having the systolic pressure below 100 mmHg are assumed as
hypotensive.
40
Upper curve: systolic blood pressure
Lower curve: diastolic blood pressure
18
24
Time of day
Severe hypertension
Moderate hypertension
Mild hypertension
Normal systolic value
Normal blood
pressure
pressure
Diastolic
blood
pressure
80
85
90
100 110
(mmHg)