Nellcor Oximax NPB-40 Operator's Manual page 102

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