Philips HF 305 User Manual page 8

Messages on the display
Symbol What to do
Measurement is in progress.
Remain seated and do not move.
‡
The batteries are almost empty. Replace all batteries. Use alkaline,
Philips Powerlife or rechargeable batteries, size AA (LR06).
This message is displayed if you have moved during the
Err
measurement. Measure your blood pressure again and
do not move during the measurement.
The pressure in the cuff is not high enough. Check if the
Err
hose has been properly connected to the monitor and if
the cuff has been placed around the arm correctly. Check whether
[uf
there is any air escaping from the cuff.
General information about blood pressure
Blood pressure is measured in mmHg (mm mercury pressure). Blood pressure
consists of two values. Systolic pressure (SYS) is created by the contractions of the
heart muscle which pumps the blood into the arteries. Diastolic pressure (DIA) is
created when the heart relaxes and fills with blood again. The World Health
Organisation (WHO) has laid down the following standard values with regard to the
blood pressure of adults:
High blood pressure = risk factor
Systolic pressure (SYS) is too high when it exceeds 160 mmHg and diastolic
pressure (DIA) is too high when it exceeds 95 mmHg. We speak of 'high blood
pressure' when one of the two pressures exceeds the value mentioned above.
Borderline values
Systolic pressure: 140-160 mmHg
Diastolic pressure: 90-95 mmHg
Standard values
Systolic pressure: max. 140 mmHg
Diastolic pressure: max. 90 mmHg
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