Some Useful Information about Blood Pressure

9.Some Useful Information about Blood Pressure

	200	Upper curve: systolic blood pressure
	200	Lower curve: diastolic blood pressure
		Lower curve: diastolic blood pressure
mmHg	150
mmHg	100
	100
	50
	6	12	18	24

Time of day

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		Severe hypertension
180	Moderate hypertension
160	Moderate hypertension
160	Mild hypertension
140	Mild hypertension
140	Normal systolic value
130	Normal systolic value
130	Normal blood
120	pressure
120	Optimal blood					Diastolic
	pressure					Diastolic
	(target value)					blood
	80	85	90	100	110	pressure
	80	85	90	100	110	(mmHg)
						(mmHg)

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. How- ever, those having the systolic pressure below 100 mmHg are assumed as hypotensive.