visomat comfort III Mode D'emploi page 31

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A
Notes on use
ment is being taken or the conditions stated are outside those parameters laid down in the specifications. See
technical data.
The cuff fits upper arms between 23 and 43 centimetres in circumference.
The device covers pressures up to 300 mmHg and a pulse rate of 40 to 160 beats per minute.
Method of measurement
This product uses the oscillometric method for measuring blood pressure and pulse rate. The cover is con-
nected to the device and placed round the arm as shown on the diagram on the cuff. When the Start/Stop
button is pressed, the device starts to build up pressure automatically.
Within a very short space of time the device records the small oscillations within the cuff, which occur owing
to expansion and contraction of the arteries in the arm (pulsation). The automatic pressure buildup usually
stops approx. 40 mmHg above the systolic value (fuzzy logic). Then the measuring process proper starts by
letting air out of the cuff. The amplitude of each pressure wave is measured in millimetres of mercury (mmHg),
converted and displayed on the LCD in the form of a digital value. Systole, diastole and pulse are established
and after that the cuff is completely deflated.
The monitor offers an additional display for identifying irregular pulses. This can be an indication of an irregular
heartbeat (arrhythmia) but also of unrest during the measurement (Irregular pulse waves).
A memory stores the last 30 results for the purposes of comparison.
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