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2. Important information on blood pressure and its measurement
2.1. How does high/low blood pressure arise?
Your level of blood pressure is determined in the circulatory center of the brain and
adjusts to a variety of situations through feedback from the nervous system. To adjust
blood pressure, the strength and frequency of the heart (pulse), as well as the width of
circulatory blood vessels is altered. Blood vessel width is affected by fine muscles in
the blood vessel walls.
Your level of arterial blood pressure changes periodically during heart activity. During the
"blood ejection" (Systole), the value is highest (systolic blood pressure value). At the end
of the heart’s "rest period" (Diastole), pressure is lowest (diastolic blood pressure value).
Blood pressure values must lie within certain normal ranges in order to prevent particu-
lar diseases.
2.2. Which values are normal?
Blood pressure is too high if your diastolic pressure is above 100 mmHg and/or your
systolic blood pressure is over 160 mmHg,
while at rest
. In this case, please consult
your physician immediately. Long-term values at this level endanger your health due to
continual damage to the blood vessels in your body.
If your systolic blood pressure values are between 140 mmHg and 159 mmHg and/or
the diastolic blood pressure values are between 90 mmHg and 99 mmHg, consult your
physician. Regular self-checks are necessary.
If you have blood pressure values that are too low (i.e., systolic values under 105
mmHg and/or diastolic values under 60 mmHg), consult your physician.
Even with normal blood pressure values, a regular self-check with your blood pressure
monitor is recommended. You can detect possible changes in your values early and
react appropriately.
If you are undergoing medical treatment to control your blood pressure, keep a record
of values along with time of day and date. Show these values to your physician.
Never
use the results of your measurements to independently alter the drug doses
prescribed by your physician.
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