Patient Monitor User Manual Monitoring SpO
2
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indication on the monitor. This delay is the combination of the configured alarm delay time
plus the general system delay time.
10.7 Perfusion Index (PI)*
PI is a numeric value indicating perfusion level. It reflects the perfusion level at the monitoring site.
As the measurement of SpO
2
is based on the pulsation caused by the blood flow through the
vessel, PI is in relation to the strength of the pulse. Also, you can use PI as a signal quality
indicator for the measurement of SpO
2
.
PI is indicated by a value ranging from 0 to 10. The bigger the value is, the better the perfusion
and the signal quality will be. The perfusion level and the signal quality are at their maximum
when the value reaches 10. When PI is below 2, it indicates the low perfusion and the poor signal
quality at the monitoring site; you need to reposition the sensor or find a better site.
The PI value will be displayed in the SpO
2
parameter area.
10.8 Measuring SpO
2
and NIBP Simultaneously
While measuring SpO
2
and NIBP on the same limb simultaneously, the user can set NIBP Simul
to On in SpO
2
Setup menu to lock the SpO
2
alarm status until the NIBP measurement ends. If
NIBP Simul is set to Off, low perfusion caused by NIBP measurement may lead to inaccurate
SpO
2
readings and therefore cause false physiological alarms.
10.9 Setting Pitch Tone
If tone modulation is on, the PR sound lowers when the SpO
2
level drops. In the SpO
2
Setup
menu, select pitch tone to toggle between On and Off.
10.10 Setting Sensitivity
The different sensitivity indicates different refresh frequency. High indicates the refresh
frequency of SpO
2
value is the most frequent. To change the sensitivity, please follow the steps:
1 Select the SpO
2
Setup menu;
2 Select Sensitivity on the interface and select the desired sensitivity from the popup list.
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