Chapter 4: Operating Instructions
UT100 Handheld Pulse Oximeter Operation Manual
4-7
WARNING! Do not autoclave, ethylene oxide sterilize, or immerse the
sensors in liquid.
CAUTION! Unplug the sensor from the monitor before cleaning or
disinfecting.
Clean the sensor with a soft cloth moistened in water or a mild soap
solution. To disinfect the sensor, wipe the sensor with isopropyl alcohol.
4.5 Performance Considerations
WARNING! Pulse oximetery readings and pulse signal can be affected by
certain ambient environmental conditions, sensor application
errors, and certain patient conditions.
Inaccurate measurements can be caused by:
•
Incorrect application of the sensor
•
Placement of the sensor on an extremity with a blood pressure cuff,
arterial catheter, or intravascular line
•
Ambient light
•
Prolonged patient movement
Loss-of-pulse signal can occur for the following reasons:
•
The sensor is too tight
• A blood pressure cuff is inflated on the same extremity as the one with the
sensor attached
•
There is arterial occlusion proximal to the sensor
Select an appropriate sensor, apply it as directed, and observe all warnings
and Cautions presented in the directions for use accompanying the sensor.
Clean and remove any substance such as nail polish from the application site.
Periodically check to ensure that the sensor remains properly positioned on
the patient.
WARNING! Tissue damage can be caused by incorrect application or
duration of use of a SpO
2
sensor. Inspect the sensor site as
directed in the sensor directions for use.
High ambient light source such as surgical lights (especially those with a xenon
light source), bilirubin lamps, fluorescent lights, infrared heating lamps, and
direct sunlight can interfere with the performance of a SpO
2
sensor. To
