Medion K350 MD42780 Handbuch Seite 31

The unit measures blood pressure indirectly using
a sleeve around the wrist. Inflating the sleeve pres
ses the arteries together so that no more blood can
flow through them. If the pressure in the sleeve is
then reduced, this creates a relation between the
sleeve pressure and the blood pressure.
The unit has electronic step valves that can detect
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even slight changes during the measurement,
which can be evened out using the sleeve pressure.
By reducing the pressure step by step, fluctuati
ons in the sleeve are recorded by the unit and inclu
ded in the assessment. If no fluctuations are
recorded for a step, the air pressure is reduced.
Existing fluctuations are assessed at the corre
sponding step level until they can be determined
precisely.
Arm and wrist measurement
Blood pressure measured at the wrist can differ
from the pressure measured at the upper arm, for
example because the strength of the arteries in the
wrist and upper arm may differ.
In many cases, the difference for healthy persons
can be ±10 mmHg of the systolic and diastolic
blood pressure.
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