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The sensor's hardware and firmware separate the
average pressure and the pressure fluctuations. They
amplify the fluctuations and then add these amplified
fluctuations to the average pressure, creating a signal
that enables the calculation of the MAP, the systolic and
diastolic pressures.
The three ranges of the sensor show the real measured
pressure (with very small fluctuations in mm Hg), only the
pressure amplified fluctuations (Arb) and the combined
signal of both of them.
In the "mm Hg + Arb" mode you can calculate these
parameters:
MAP:
MAP (Mean Arterial Pressure) is the pressure where the
fluctuations are maximal.
The firmware starts by checking first the average
pressure where the largest fluctuations are.
Systolic:
The pressure exerted by the blood on the arterial walls
while the heart is beating (maximum pressure achieved).
Ideally this value should be in the 90 to 120 mm Hg range
for adults and roughly 100 mm Hg for children aged 6 to
9.
This is the average high pressure where the fluctuations'
magnitude is 54% of their magnitude at the MAP.
V2018.01 English