readings. Pay more attention to the application when applying this device
under the situation of computed tomography (CT) environment.
SpO2 measurements may be adversely affected in the presence of high
ambient light. Shield the sensor area (with a surgical towel, for example) if
necessary.
Dyes introduced into the bloodstream, such as methylene blue,
indocyanine green, indigo carmine, and fluorescein, may adversely affect
the accuracy of the SpO2 reading.
Any condition that restricts blood flow, such as use of a blood pressure cuff
or extremes in systemic vascular resistance, may cause a failure to
determine accurate pulse rate and SpO2 readings.
Remove fingernail polish or artificial fingernails before applying SpO2
sensors. Fingernail polish or artificial fingernails may lead to inaccurate
SpO2 readings.
SpO2 average is the number of pulse beats over which the SpO2 value is
averaged; pulse average is the number of seconds over which the pulse
value is averaged.
Hazards arising from software errors have been minimized. Hazard
analysis conforms to meet ISO14971: 2000 and EN60601-1-4: 1996.
Significant levels of dysfunctional hemoglobins, such as
carboxy-hemoglobin or methemoglobin, will affect of the accuracy of the
SpO2 measurement.
Optical cross-talk can occur when two or more sensors are located in
adjoining area. It can be eliminated by covering each site with opaque
material. Optical cross-talk may adversely affect the accuracy of the SpO2
readings.
Change new batteries in time, when the power low indicator appears. As,
the readings will influenced when the power is low.
Obstructions or dirt on the sensor’s red light or detector may cause a
sensor failure. Make sure there are no obstructions and the sensor is clean.
For routine equipment maintenance, please refer to the service procedures
at the associated section as indicated in the manual.
As to the other concerns for attention, please carefully look through the
specific chapter in this instruction.