20
5
19
What are systolic pressure and diastolic pressure?
When ventricles contract and pump blood out of the heart, the blood pressure reaches its
maximum value in the cycle, which is called systolic pressure. When the ventricles relax, the
blood pressure reaches its minimum value in the cycle, which is called diastolic pressure.
What is the standard blood pressure classification?
ABOUT BLOOD PRESSURE
ABOUT BLOOD PRESSURE
CAUTION
Only a physician can tell your normal BP range. Please contact a physician if your
measuring result falls out of the range. Please note that only a physician can tell
whether your blood pressure value has reached a dangerous point.
Blood Pressure Category
Normal
Elevated
High Blood Pressure
(Hypertension) Stage 1
High Blood Pressure
(Hypertension) Stage 2
Hypertensive Crisis
(Consult your doctor immediately)
Systolic
mmHg (upper#)
Diastolic
mmHg (lower#)
less than 120
120-129
130-139
140 or higher
Higher than 180
and
or
or
and/or
less than 80
80-89
90 or higher
Higher than 120
This chart reflects blood pressure categories defined by
American Heart Association.
and
less than 80
The following chart is the standard blood pressure classificatio
n published by
American Heart Association (AHA).
press
artery
vein
blood discharging
Systolic
blood entering
Diastolic
relax
