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Common question of blood pressure
measurement
3. Why measure Blood Pressure at home?
Blood pressure measured at a clinic or doctor's
of f ice may cause apprehension and can
produce an elevated reading, 25~30 mmHg
higher than that measured at home. Home
measurement reduces the effects of outside
inf luences on blood pr essur e r eadings,
supplement s t he doct or 's r eadings and
provides a more accurate, complete blood
pressure history.
4. WHO Blood Pressure Classification?
St andards t o assess high blood pressure,
without regard to age, have been established
by the world Health Organization (WHO), as
shown below:
kPa/ mmHg
12.0~18.5kPa
90~139mmHg
18.7~21.2kPa
140~159mmHf
21.3~23.9kPa
160~179mmHg
≥24.0kPa
≥180mmHg
kPa/ mmHg
8.0~11.9kPa
60~89mmHg
12.0~13.2kPa
90~99mmHg
13.3~14.5kPa
100~109mmHg
≥14.7kPa
≥110mmHg
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Common question of blood pressure
measurement
Note: There is no definition about hypopiesia,
and generally SYS (systolic pressure) less than
90mmHg or DIA (diastolic pressure) less than
60mmHg is called hypotension.
5. Blood pressure variations?
An individual's blood pressure varies greatly on
a daily and seasonal basis. It may vary by 30 to
50 mmHg due to various conditions during the
day. In hypertensive individuals variations are
even more pronounced. Normally, the blood
pressure rises while at work or play and falls to
its lowest levels during sleep. So do not be
overly concerned by t he result s of one
measurement.
Take measurements at the same time every
day using the procedure described in this
manual to get to know your normal blood
pressure. Regular readings give a more
comprehensive blood pressure history. Be sure
to note date and time when recording your
blood pressure. Consult doctor to interpret the
blood pressure data.
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