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o Do not apply the sensor on the same arm as a blood pressure cuff, arterial catheter or
infusion line(s) (IVs)
o Finger is outside recommended size range or patient weight range
o Cardiogreen and other intravascular dyes
o Poor pulse quality
o Artificial nails or fingernail polish
o Excessive ambient light
o Venous pulsations
o Improperly applied device
o Excessive motion
o Carboxyhemoglobin
o Dysfunctional hemoglobin
o Moisture in the sensor or device
o Improperly applied sensor
o Methemoglobin
o High-frequency electrosurgical interference
o Residue (e.g., dried blood, dirt, grease, oil) in the light path
o Incorrect sensor type
o Cardiovascular dyes
o Anemia or low hemoglobin concentrations
o Sensor not at heart level
• The Model M1 may not work when circulation is reduced. Warm or rub the finger, or re- position
the device.
• The Model M1 display will display dashes when there is no valid sensor data for an extended
period. No readings or poor readings will prevent data updates.
• In some circumstances, the Model M1 may interpret motion as good pulse quality. Minimize
patient motion as much as possible.
• Clean the Model M1 before applying it to a patient.
• The Model M1 is non-sterile. Do not sterilize, autoclave, or immerse the Model M1 in liquid.
• Do not pour or spray any liquids into the device.
• Do not use caustic or abrasive cleaning agents, or any cleaning products containing ammonium
chloride or isopropyl alcohol.
• This Model M1 is a precision electronic instrument and must be repaired by qualified technical
professionals. Field repair of the device is not possible. Do not attempt to open the case or repair
the electronics. Opening the case will damage the device and void the warranty.
• Batteries may leak or explode if used or disposed of improperly. Remove the battery from the M1
if the device will be stored for more than 30 days.
• A power supply is not included with this ME Equipment and therefore should not be used as an
ME System.
• Follow local, state, or national governing ordinances and recycling instructions regarding disposal
or recycling of the device and device components.
• Care should be taken to avoid device contact with the patient, other than the Nonin Model
8000AA fingertip sensor.
• The operator should briefly touch the device (less than one second) to ensure that it is not
overheating, before handling the device. If the external temperature of the device is greater than
48˚C, the device should immediately be turned off and the sensor removed from the patient. The
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