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Human NIBP Nano
Owner’s Guide
Use of Cyclic Measurements
LabChart’s Cyclic Measurements is a useful analysis tool (see the
LabChart Help for more information). LabChart’s Cyclic Measurements
and the Human NIBP Nano Interface’s outputs return values for derived
parameters that are near-identical. For example, derived heart rate
values diff er with a standard deviation in the range of +/-0.7 BPM. This is
due to the AutoCal periods; during these, the Human NIBP maintains a
consistent rate but LabChart’s Cyclic Measurements returns a spuriously
low rate because no beats are detected in the Finger Pressure channel.
Clearly it would be preferable to use the Human NIBP calculation in this
case. Otherwise, the largest diff erences between Human NIPB outputs
and Cyclic Measurements are due to beat-time detection. This results
in the beat to beat transitions not quite lining up. Typically, the beat to
beat transitions agree to within 70 ms, excluding AutoCal periods. The
Human NIBP Mean Arterial pressure and the Cyclic Measurements Mean
on the Finger Pressure channel agree to within about 1 mmHg outside the
AutoCal periods.
Test mode
Test mode is a useful feature because it can be used to verify that the
Human NIBP Nano is working correctly.
To go into Test mode:
In the NIBP HCU and test dialog, click on the
Test mode
button. Select one
of the options from the Test Mode dialog and click
OK
. On return to the
Human NIBP Settings dialog you will notice that:
•
Auto calibration is disabled as there is no valid data to calibrate.
Figure 2–17
Multiple Add to Data Pad
dialog showing suggested
analysis settings.