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Performance Considerations
136
Inaccurate measurements can be caused by:
•
incorrect application of the O
•
placement of the O
blood pressure cuff, arterial catheter, or intravascular line
•
ambient light
•
excessive patient activity
•
intravascular dyes or externally applied coloring, such as
nail polish or pigmented cream
•
failure to cover the O
material in high ambient light conditions
Loss-of-pulse signal can occur for the following reasons:
•
the O
M
XI
AX
•
a blood pressure cuff is inflated on the same extremity as
the one with the O
•
there is arterial occlusion proximal to the O
•
poor peripheral profusion
Select an appropriate O
XI
all warnings and cautions presented in the directions for use
accompanying the O
M
XI
such as nail polish from the application site. Periodically check to
ensure that the O
M
sensor remains properly positioned on the
XI
AX
patient.
High ambient light sources 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 an SpO
2
ambient light, ensure that the sensor is properly applied, and cover the
O
M
sensor site with opaque material.
XI
AX
M
sensor
XI
AX
M
sensor on an extremity with a
XI
AX
M
sensor site with opaque
XI
AX
sensor is applied too tightly
M
sensor attached
XI
AX
M
sensor, apply it as directed, and observe
AX
sensor. Clean and remove any substances
AX
O
M
sensor. To prevent interference from
XI
AX
N-600x Operator's Manual
M
sensor
XI
AX
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