Operation Manual

41Evaluating the measurements
IREGB
bioelectric control mechanism for the heart beat that
results in an abnormal cardiac rhythm. Compared to a
normal cardiac rhythm, symptoms include missed or
premature heart beats or an overall slower or acceler-
ated pulse. The possible causes include, among other
things:
• physical disposition,
• advanced age,
• cardiac illness,
• excessive consumption of alcohol or nicotine,
• stress,
• lack of sleep.
If the arrhythmia indicator
22
appears, repeat the
measurement.
At the same time, make sure you comply with the basic
rules for correct measurement of blood pressure (see
chapter “Performing a measurement”).
WHO classifications
The World Health Organisation (WHO) has defined six
categories for the classification of blood pressure levels.
This classification is provided in the following table.