Nellcor N-20 Operator's Manual page 34

Troubleshooting
28
• Excessive patient motion may be preventing the
N-20/N-20P from tracking the pulse. Verify that the
sensor is securely apphed and replace it if necessary.
Change the sensor site. Use a type of sensor that
tolerates more patient movement (e.g., an adhesive
sensor).
• The sensor may be too tight, there may be excessive
ambient light, or the sensor may be on an extremity
with a blood pressure cuff, arterial catheter, or
intravascular line.
• Excessive environmental motion or electromagnetic
interference may be preventing the N-20/N-20P from
tracking the pulse.
4. The PULSE SEARCH indicator appears after
successful measurements have been made.
• Check the patient.
• Perfiision may be too low for the N-20/N-20P to track
the pulse. Check the patient. Test the instrument on
someone else. Change the sensor site. Try another type
of sensor.
• Excessive patient motion may be preventing the
N-20/N-20P from tracking the pulse. Verify that the
sensor is securely apphed and replace it if necessary.
Change the sensor site. Use a type of sensor that
tolerates more patient movement (e.g., an adhesive
sensor).
• The sensor may be too tight, there may be excessive
ambient light, or the sensor may be on an extremity
with a blood pressure cuff, arterial catheter, or
intravascular line.
•
Excessive environmental motion or electromagnetic
interference may be preventing the N-20/N-20P from
tracking the pulse.