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Electromagnetic interference
The device contains sensitive electronic components (Microcomputer). There-
fore, avoid strong electrical or electromagnetic fields in the direct vicinity of
the device (e.g. mobile telephones, microwave cookers). These can lead to
temporary impairment of the measuring accuracy.
2. Important information on the subject of blood-pressure
and its measurement
2.1. How does high/low blood-pressure arise?
The level of blood-pressure is determined in a part of the brain, the so-called
circulatory centre, and adapted to the respective situation by way of feedback
via the nervous system. To adjust the blood-pressure, the strength and fre-
quency of the heart (Pulse), as well as the width of circulatory blood vessels
is altered. The latter is effected by way of fine muscles in the blood-vessel
walls. The level of arterial blood-pressure changes periodically during the heart
activity: During the «blood ejection» (Systole) the value is maximal (systolic
blood-pressure value), at the end of the heart's «rest period» (Diastole) minimal
(diastolic blood-pressure value). The blood-pressure values must lie within cer-
tain normal ranges in order to prevent particular diseases.
2.2. Which values are normal?
Blood pressure is too high if at rest, the diastolic pressure is above 90 mmHg
and/or the systolic blood-pressure is over 160 mmHg. In this case, please
consult your doctor immediately. Long-term values at this level endanger your
health due to the associated advancing damage to the blood vessels in your
body.
Should the systolic blood-pressure values lie between 140 mmHg and 160
mmHg and/or the diastolic blood-pressure values lie between 90 mmHg and
100 mmHg, likewise, please consult your doctor. Furthermore, regular self-
checks will be necessary.
With blood-pressure values that are too low, i.e. systolic values under 100
mmHg and/or diastolic values under 60 mmHg, likewise, please consult your
doctor. Even with normal blood-pressure values, a regular self-check with your
blood-pressure monitor is recommended. In this way you can detect possible
changes in your values early and react appropriately. If you are undergoing
medical treatment to control your blood pressure, please keep a record of the
level of your blood pressure by carrying out regular self-measurements at spe-
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