4 Troubleshooting
SenTec Digital Monitoring System
4.2.2 Troubleshooting SpO2 / PR monitoring
This section is applicable for SenTec TC Sensors (if SpO2 / PR are
enabled) and for SenTec’s oximetry sensors.
Table 7 Troubleshooting SpO2/ PR Monitoring
P0200
SpO2 and /
or PR too low
or too high
Venous pooling
(e.g. Trendelenburg
position)
Limitation of the method. For placement of
the sensor on the earlobe, forehead or cheek:
avoid conditions where the head is positioned
lower than the heart.
Some
cardiovascular
pathologies (e.g.
causing cardiac
arrhythmias)
Limitation of the method.
Inadequate local
blood flow at the
measurement site
Evaluate the patient status. Shock, low
cardiac index, inadequate local vasodilatation
are physiological limitations of the method.
Verify the sensor application and the
appropriateness of the monitoring site.
Avoid any mechanical pressure / stress on the
sensor or measurement site. Secure the
sensor cable with adhesive tape and a
clothing clip
Note: Refer to the Status Message ‘SpO2 low
signal’ (see
Technical Manual for the SDM
).
Electrocautery, HF
surgery,
defibrillation
The values will come back to normal after
electro-cautery, HF surgery or defibrillation.
Sensor applied to a
measurement site
that is inadequate /
not recommended
for SpO2
monitoring.
Apply sensor to a measurement site
recommended/ approved for SpO2/ PR
monitoring with an appropriate Sensor
Attachment Accessory. For instructions refer
to the
Quick Reference Guide for the SDMS
or
the
Instruction Manual for the SDMS
.
Artifacts due to
patient movements
Verify the sensor application and the
appropriateness of the monitoring site.
Secure the sensor cable with adhesive tape
and a clothing clip.
Note: Refer to the Status Message ‘SpO2
signal quality’ (see
Technical Manual for the
SDM
).
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