Citizen CH-618 User Manual

Contents

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01....... Blood Pressure Monitor Intended Use

02....... 1. What is blood pressure ?

02....... 2. Why is it useful to measure blood

pressure at home ?

.......... A. WHO blood pressure classi¿cations

.......... B. Variations in blood pressure

04....... 3. Important information before use of the

unit

06....... 4. Device description

.......... A. Name of the parts

.......... B. Description of display symbols

08....... 5. Changing Batteries

08....... 6. Attaching pressure cuff

09....... 7. Correct measurement position

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Contents

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10....... 8. Symbol Di¿nitions.

12....... 9. How to measure.

.......... A. Inserting batteries in position.

.......... B. Setting date and time.

.......... C. Steps to take blood pressure

measurement.

.......... D. Storing recalling and erasing

measurement data.

.......... E. To change batteries.

15....... 10. Maintenance.

15....... 11. Safe-keeping.

15....... 12. To prevent malfunction.

16....... 13. Warning.

17....... 14. Speci¿cations.

B

MEDICAL DISCLAIMER

This manual and product are not meant to be a
substitute for advice provided by your doctor or other
medical professional.
You are not to use the information contained herein,
or this product for diagnosing or treating a health
problem or prescribing any medication. If you have or
suspect that you have a medical problem, promptly
consult your healthcare provider.

Blood Pressure Monitor Intended Use:

Measures human's Systolic blood pressure, Diastolic blood
pressure and heart rate on wrist by oscillometric measurement
method.

The product is recommended for use by people over the age of
18 and is for home use and not clinical use.

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1. What is blood pressure ?

Blood pressure is a measurement of the force of blood Àowing
against the walls of the arteries. Arterial blood pressure is
constantly changing during the course of the cardiac cycle.
The highest pressure in the cycle is called the systolic blood
pressure, the lowest is the diastolic blood pressure. Both
pressure readings, the systolic and the diastolic are necessary
to enable a physician to evaluate the status of a patient's blood
pressure. Many factors such as physical activity, anxiety or the
time of day, can inÀuence your blood pressure. Blood pressure
is typically low in the morning and increases from the afternoon
to the evening. It is lower in the summer and higher in the
winter.

2. Why is it useful to measure blood pressure

at home ?

Having one's blood pressure measured by a doctor in a
hospital or a clinic, and a group health checks, tend to stimulate
nervousness in the subject and may even create high blood
pressure. Also varies blood pressure in accordance with a
variety of conditions and so judgment is not possible on the
basis of a single measurement.

The blood pressure measured ¿rst thing in the morning after
getting up, before taking any food and with the subject still, is
known as the fundamental blood pressure. In practice it is rather
dif¿cult to record the fundamental blood pressure, but to come

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as near as possible to measuring the blood pressure in an
environment that is close to this, is why it is useful to take the
measurement at home.

A. WHO blood pressure classifications

Standards for assessment
of high or low blood
pressure without regard to
age, have been established
by the World Health
Organization (WHO), as
shown in the chart.

* Figure No.1

B. Variations in blood pressure

Individual blood pressures vary greatly both on a daily and a
seasonal basis. These variations are even more pronounced
in hyper tense patients. Normally the blood pressure rises
while at work and is at its lowest during sleeping period.

(Hyper tense: means a person who has high blood
pressure symptom.)

The graph below illustrated
the variations in blood
pressure over a whole day
with measurement taken
every ¿ve minutes.

* Figure No.2

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The thick line represents sleep. The rise in blood pressure at 4
PM (A in the graph) and 12 PM (B in the graph) correspond to
an attack of pain.

3. Important information before use of the unit

Please rest for at least 5~10 minutes before taking the
measurement.

To allow your blood vessels to return to the condition prior to
taking the measurement, please wait at least 3~5 minutes
between measurements. You may need to adjust the wait
time according to your personal physiological situation.

If you have one of the circulatory problems as arteriosclerosis,
diabetes, liver disease, kidney disease, severe hypertension,

peripheral circulation......, please consult your doctor or

healthcare professional before using the devices.

Wait 30 ~ 45 minutes before measurement if you’ve just
consumed caffeinated beverages or smoked cigarettes.

Blood pressure measurements should be interpreted by a
physician or trained health professional who is familiar with
your medical history. By using the unit regularly and recording
the results for your physician to interpret, you keep your
physician informed of the continuing trends in your blood
pressure.

Wind the cuff snugly around your wrist and the cuff must be at
the same level as your heart.

Do not vibrate the unit during measurement, or the proper
measurement will not be achieved.

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