Nellcor N-200 - Page 86

Troubleshooting
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• Excessive patient motion may be making it impossible
for the N-200 to find a pulse pattern. If possible, keep
the patient still; check whether the sensor is applied
securely and properly and replace if necessary; use
C-LOCK ECG synchronization; move the sensor to a
new site; use a sensor that tolerates more motion; or
set the N-200 for Mode 3.
• The sensor may be damaged; replace it.
• The patient’s perfusion may be too low to allow the
N-200 to measure saturation and pulse rate.
6. Patient module cannot be connected.
• Use only a NELLCORC -13-200, C-20-200, or
C-13-200M patient module.
• Connector pins may be bent; replace the patient
module.
7. SpO2 or pulse rate change rapidly; pulse amplitude
indicator is erratic. ECG waveform is noisy.
• Check the patient.
• Excessive patient motion may be making it impossible
for the N-200 to find a pulse pattern. If possible, keep
the patient still; check whether the sensor is applied
securely and properly, and replace it if necessary; use
C-LOCK ECG synchronization; move the sensor to a
new site; use a sensor that tolerates more motion; or
set the N-200 for Mode 3.
• An electrosurgical unit (ESU) may be interfering with
performance:
– Move the N-200, the patient module, and the cables
as far from the electrosurgical unit as possible.
– Plug the N-200 and the electrosurgical unit into
different AC power supply.