Operator's Manual

6.3 Pulse oximetry
Tempus Pro User/Operator Manual - 41-2001EN-00 – Page 93
WARNING

Interfering Substances: Dyes or any substance containing dyes that change usual
blood pigmentation may cause erroneous readings.
 The pulse co-oximeter should not be used as the sole basis for diagnosis or therapy
decisions. It must be used in conjunction with clinical signs and symptoms.
 The pulse co-oximeter is not an apnoea monitor.
 The pulse co-oximeter may be used during defibrillation, but this may affect the
accuracy or availability of the parameters and measurements.
 The pulse co-oximeter may be used during electrocautery, but this may affect the
accuracy or availability of the parameters and measurements.
 The pulse co-oximeter should not be used for arrhythmia analysis.
 SpCO readings may not be provided if there are low arterial saturation levels or
elevated methemoglobin levels.
 SpO2, SpCO, SpMet, and SpHb are empirically calibrated in healthy adult volunteers
with normal levels of carboxyhemoglobin (COHb) and methemoglobin (MetHb).
 Do not adjust, repair, open, disassemble, or modify the pulse co-oximeter or
accessories. Injury to personnel or equipment damage could occur. Return the pulse
co-oximeter for servicing if necessary.
CAUTION

Do not place the pulse co-oximeter where the controls can be changed by the patient.
 Electrical shock and flammability hazard: Before cleaning, always turn off the device
and disconnect from any power source.
 When patients are undergoing photodynamic therapy they may be sensitive to light
sources. Pulse oximetry may be used only under careful clinical supervision for short
time periods to minimize interference with photodynamic therapy.
 Do not place the pulse co-oximeter on electrical equipment that may affect the device,
preventing it from working properly.
 If SpO2 values indicate hypoxaemia, a laboratory blood sample should be taken to
confirm the patient’s condition.
 If the Low Perfusion message is frequently displayed, find a better perfused monitoring
site. In the interim, assess the patient and, if indicated, verify oxygenation status
through other means.
 Change the application site or replace the sensor and/or patient cable when a
“Replace sensor” and/or “Replace patient cable”, or a persistent poor signal quality
message (such as “Low SIQ”) is displayed on the host monitor. These messages may
indicate that patient monitoring time is exhausted on the patient cable or sensor.
 If using pulse oximetry during full body irradiation, keep the sensor out of the radiation
field. If the sensor is exposed to the radiation, the reading might be inaccurate or the
device might read zero for the duration of the active irradiation period.
 The device must be configured to match your local power line frequency to allow for
the cancelation of noise introduced by fluorescent lights and other sources.
 To ensure that alarm limits are appropriate for the patient being monitored, check the
limits each time the pulse co-oximeter is used.