inbody BPBIO250, User Manual

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10
Blood Pressure Measurement Method
A. Non-Invasive Blood Pressure Measurement Principles
Oscillometric method
Blood pressure is a measurement of changes in the pressure on the blood vessels. Blood pressure
can be measured by direct or indirect measurement. This equipment supports indirect
measurement using a cuff. This equipment tracks and analyzes the blood flow oscillations under
the pressure using the cuff from the highest to the lowest pressure as shown by the figure
below when the minute pressure speed is determined by the heartbeat. This equipment adopts
oscillometric method using a cuff for blood pressure measurement. It determines the systolic,
diastolic and average pressure on the basis of the blood flow oscillations measured through the
cuff. The point where the maximum amplitude of the blood flow oscillation appeared is the
average pressure, the points where the 70% and 60% amplitudes appeared are the systolic and
the diastolic pressure respectively.
II.
0
60
120
180
Cuffpressure
(mmHg)
Oscillations in Cuffpressure
Diastolic
Systolic