Measurement Principle - GERATHERM active control Manuel D'utilisation

Measurement Principle

This product uses the oscillometric measuring method to detect blood pressure. Before every measu-
rement, the unit establishes a "zero pressure" equivalent to the air pressure.
Then it starts inflating the cuff. As it does so, the unit detects pressure oscillations generated by the
pulsation of the blood flow.
The device compares the longest and the shortest time intervals of detected pulse waves with the
mean time interval and then calculates the standard deviation.
Along with the blood pressure reading, the device also shows a symbol (arrhythmia icon) if the heart
beat is irregular.
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