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Problem
Unable to obtain a
green pulse display on
the bargraph, cont'd.
Frequent or steady
pulse quality
indication.
Possible Cause
The sensor is applied
incorrectly.
There is possible
interference from one of
the following sources:
• arterial catheter
• blood pressure cuff
• electrosurgical
procedure
• infusion line
The red LED is not
illuminated in the finger
insertion area.
There is excessive
ambient light.
The sensor is applied to a
polished or artificial
fingernail.
The red LED is not
illuminated in the finger
insertion area.
Patient motion is
excessive.
Possible Solution
Apply the sensor correctly.
Reduce or eliminate any
interference. Make sure that
the sensor is not placed on the
same arm being used for other
patient therapies or diagnostics
(e.g., blood pressure cuff).
Ensure that the sensor is
securely attached to the 4100.
Check the 4100's batteries.
Check the sensor for any
visible signs of deterioration.
Contact your distributor or
NONIN Customer Support.
Shield the sensor from the
light source.
Apply the sensor to a finger
without artificial or polished
nails.
Position the sensor at a
different site.
Ensure that the sensor is
securely attached to the 4100.
Check the sensor for any
visible signs of deterioration.
Contact your distributor or
NONIN Customer Support.
Reduce patient motion.
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