32
12.AI + Blood Pressure Measurement
How to incorporate the Tonogram display for a more accurate measurement: A tonogram shows
the output of an AI pulse wave sensor. The positional relationship of the AI pulse wave sensor and
an artery can be estimated from a tonogram. [Fig. 4]
The values around the peak of the tonogram (around the centre of an artery) are calculated.
The centre peak represents the ideal measurement. Measurement is also possible with an
ascending line to peak or a descending line from peak (see above); however, it is also possible that
an accurate pulse wave may not be taken. If only one outer indicator light is on, reattach the AI
pulse wave sensor and measure again.
Measurement is impossible if the tonogram shows an ascending, descending or flat line (see
above). When re-measuring with an ascending or descending line, it is possible to adjust the
position of the AI pulse wave sensor by sliding it instead of having to remove and reattach the unit.
The artery is located in the direction of the LED lights that are lit. While pressing in the slide
stoppers, adjust the pulse wave sensor by one or two scale units (black lines on the casing) in that
direction.
* The Tonogram display has two options; Operator View and Patient View. (Operator View is
selected by default). You can change the setting depending on which way the monitor is facing.
Refer to section 18.3. for more detail.
Slide toward "A"
by one or two
scale units.
Measuring on the
"A" side of the
sensor
Measuring on the
"B" side of the
sensor
Acceptable for measurement
Slide toward "B"
by one or two
scale units.
Readjust the sensor.
(Refer to
Section 9.2.)
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
[Fig. 4]
Summary of Contents for HEM-9000AI
Page 94: ...94 22 Specifications ...
Page 95: ...95 22 Specifications EN ...
