Nellcor Oximax NPB-40, Руководство оператора

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Performance Considerations
94
Inaccurate measurements can be caused by:
• incorrect application of the O
XI
M
AX
sensor
• placement of the O
XI
M
AX
sensor on an extremity
with a blood pressure cuff, arterial catheter, or
intravascular line
• ambient light
• prolonged and/or excessive patient movement
• intravascular dyes or externally applied coloring,
such as nail polish or pigmented cream
• failure to cover the O
XI
M
AX
sensor site with opaque
material in high ambient light conditions
Loss-of-pulse signal can occur for the following reasons:
• the O
XI
M
AX
sensor is applied too tightly
• a blood pressure cuff is inflated on the same
extremity as the one with the
O
XI
M
AX
sensor
attached
• there is arterial occlusion proximal to the O
XI
M
AX
sensor
• poor peripheral perfusion
Select an appropriate O
XI
M
AX
sensor, apply it as directed,
and observe all warnings and cautions presented in the
Directions For Use accompanying the
O
XI
M
AX
sensor.
Clean and remove any substances, such as nail polish,
from the application site. Periodically check to ensure
that the
O
XI
M
AX
sensor remains properly positioned on
the patient.