SpO
Problems
2
No SpO
measurement is displayed
2
Cause
Incorrect model setting
Perfusion has declined
Strong ambient light
Defective probe or cable
Unable to measure
Cause
Patient may have peripheral
circulatory dysfunction
caused by shock,
hypotension or arterial
infarction of the probe area.
Wrong sensor type
Improper sensor placement
Sensor too tight
Sensor on same arm as
NIBP cuff
Sensor on same arm as IV or
A-line
Unreliable readings
Cause
Other pulsations exist
Improper sensor placement
Carbon monoxide
Reagent chromocyte
Strong ambient light
SpO
Internal Error
2
Cause
Defective probe or cable
Solution
Ask your Biomed to reset the model number to the correct value.
Verify appropriate perfusion of sensor site.
Drape the sensor site to shield it from the light source.
Replace the probe and retest.
Solution
Assess patient condition.
The unit is designed to work with Nellcor OxiMax sensors only.
Check the placement of the sensor.
Loosen sensor.
Move sensor to the other arm.
Choose another sensor site.
Solution
NOTE: Address each condition according to facility protocol
Check for other blood alteration causes, such as cardiac massage, external noise,
vein pulsations, and convulsions.
Check the placement of the sensor.
This pulse oximeter cannot detect hemoglobin, such as carbon-monoxy hemoglobin
or methemoglobin. Therefore, faulty readings can result when measuring carbon-
monoxide intoxicated patients or patients who are heavy smokers. Consult Blood
Gas.
Readings can be influenced by the presence of reagent chromocytes, such as
indocyanine-green and methylene-blue (when heavily concentrated in the artery).
Check the patient's condition.
Drape the sensor site to shield it from the light source.
Solution
NOTE: Address each condition according to facility protocol
Replace the probe and retest.
SpO
Troubleshooting and Maintenance
Problems
2
10-5