Citizen ch-657 Manual De Usuario

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Precautions for use

1.  If you suffer from heart disease, high blood pressure or other 

circulatory disease, consult your physician before using the monitor.

2.  If you feel abnormal pressure of the cuff during use or any other 

irregularity, reduce the pressure by immediately switching off the 
power or remove the batteries and consult the sales outlet where 
purchased.

3.  If you think the measurement is abnormal or if measurement makes 

you feel unwell, discontinue use and consult your physician.

4.  Blood pressure measurement may not be possible for anyone with 

a weak pulse or arrhythmia.

5.  Repeated blood pressure measurement may cause problems such 

as congestion or swelling in some people.

6.  Frequently repeated blood pressure measurements will not give 

accurate results. Allow an interval of about 1 minute between 
measurements.

7.  If you suffer from a severe problem with blood circulation in your 

arms, consult your physician before using the monitor. Failure to do 
so could be hazardous to your health.

8.  Measurement may not be possible for anyone with insuffi cient 

blood fl ow to the area where measurements will be taken or who 
suffers from a frequent irregular heartbeat. Consult your physician 
for advice on whether to use the monitor.

9.  DO NOT wrap the cuff around an injured wrist.
10. DO NOT wrap the cuff around a wrist in which a drip (intravenous 

infusion) is inserted, or which is being used for blood transfusion 
as part of medical treatment. Doing so could result in an injury or a 
serious accident.

11. DO NOT use the monitor in the vicinity of fl ammable gases such as 

those used for anaesthesia. Doing so could ignite the gases and 
cause an explosion.

12. DO NOT use the monitor in enriched oxygen environments such 

as a hospital’s hyperbaric chamber or oxygen tent. Doing so could 
ignite the oxygen and cause a fi re.

PRECAUTIONS FOR USE AND MAINTENANCE

GENERAL REMARKS

10. If the Body Movement Indicator or Irregular Heartbeat (IHB) Indicator 

is displayed, relax and measure your blood pressure again. If the 
Irregular Heartbeat (IHB) Indicator appears frequently, you are advised 
to consult a doctor about your health condition. ( 

 

See page 19)

11. The fi gure below shows the blood pressure classifi cations under the 

WHO standards.

Remarks:
The graph is not exact, but 
may be used as a guide 
in understanding non-
invasive blood pressure 
measurements. The device 
is only intended for use by 
adults.

SYSTOLIC

(mmHg)

80 85 90

100

110

DIASTOLIC

(mmHg)

Grade 3 Hypertension (severe)

Grade 2 Hypertension (moderate)

Grade 1 Hypertension (mild)

High-Normal

Normal

Optimal

160

140

130

120

180

Defi nitions and Classifi cations of Blood Pressure Levels

12.  Intended Use

•  This device is noninvasive blood pressure monitor by 

oscillometric method. This device can measure the systolic 
blood pressure (SYS), the diastolic blood pressure (DIA) and the 
pulse rate automatically.

•  This device is intended to be used for checking personal health 

condition at home under the direction of a physician and is not 
intended to be a diagnostic device.

•  This device is not intended for use with neonates or infant, and 

not intended for automatic cycling measurement.

Measure your blood pressure at the same time each day.

*   Your blood pressure changes all the time. This means that data 

gathered over a long period has far more signifi cance than data 
from just one measurement. For this reason, you must measure your 
blood pressure on a daily basis. Ideally, you should measure your 
blood pressure at the same time each day, wherever possible.