WHO Blood Pressure Classifications
Standards for assessment of high or low blood pressure, regardless of age,
have been established by the World Health Organization (WHO) as shown in
the following chart.
CATEGORY
Optimal
Normal
High - Normal
Mild Hypertension
Borderline
Moderate Hypertension
Severe Hypertension
Isolated Systolic Hypertension
Borderline
This chart is only a general guideline. Please contact your physician to
determine your NORMAL BLOOD PRESSURE.
Variations in Blood Pressure
Blood pressure can be influenced by many factors. This change can occur from
moment to moment. Normally, blood pressure is lowest during the sleeping
period and rises during the day. The graph below represents the variations in
blood pressure shown over a day with measurements taken every 5 minutes.
12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11
PM
Time
AM
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SYSTOLIC (mmHg)
DIASTOLIC (mmHg)
<120
<80
<130
<85
130-139
85-89
140-159
90-99
140-149
90-94
160-179
100-109
≥180
≥110
≥140
<90
140-149
<90
The dotted line represents the
sleep period. The rise in blood
pressure at 1 p.m. (A in the graph)
corresponds to a stressful
occurrence and at 7 p.m. (B in the
sleep
graph) a period of exercise.
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Important Information Before Use
1. Blood pressure measurements should only be interpreted by a physician or a trained
health care professional who is familiar with your medical history. Through regular use of
this device and recording of your measurements, you can keep your physician informed of
the changes in your blood pressure.
2. Perform your measurement in a quite place. You should be seated in a relaxed position.
3. Avoid smoking, eating, taking medication, alcohol consumption or physical activity 30
minutes prior to taking a reading. If you are exhibiting signs of stress, avoid taking your
measurement until the feeling subsides.
4. Rest 15 minutes prior to taking a reading.
5. Remove any constrictive clothing or jewelry that may interfere with the cuff placement.
6. Apply the cuff to the proper position on the left wrist. The unit should be located on the
inside of your left wrist with the digital display panel in view.
7. Keep the monitor stable during measurement to achieve an accurate reading. Remain still;
do not talk during the measurement.
8. Record your daily blood pressure and pulse readings on a chart.
9. Take your readings at the same time, each day (or as recommended by your physician) to
get an accurate indication of change in your true blood pressure.
10. Wait a minimum of 15 minutes between readings to allow for the blood vessels to return to
normal. The wait time may vary depending on your individual physiological characteristics.
11. Although such cases are rare, for those with an extremely weak pulse or irregular pulse,
errors may result which prevent proper measurement. If abnormal variations are noticed,
consult with your physician or trained healthcare physician.
12. This device is intended for adult use.
While taking a measurement, you can stop the inflation or deflation process of the cuff
at any time by pressing the POWER button.
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