Nonin 8500 Operator's Manual page 9

Indications for Use
Cautions (Continued)
This device is designed to determine the percentage of arterial oxygen saturation of functional hemoglobin. Factors that
may degrade pulse oximeter performance or affect the accuracy of the measurement include the following:
- excessive ambient light
- excessive motion
- electrosurgical interference
- blood flow restrictors (arterial catheters, blood pressure
cuffs, infusion lines, etc.)
- moisture in the sensor
- improperly applied sensor
- incorrect sensor type
- inadequate signal
When using the monitor in the home, avoid exposing the monitor to lint and dust.
When using the monitor around small children and pets, avoid leaving the monitor unattended. Cables pose a risk of injury,
including strangulation.
A functional tester cannot be used to assess the accuracy of a pulse oximeter monitor or sensor.
All parts and accessories connected to the serial port of this device must be certified according to at least IEC Standard
EN 60950, IEC 62368-1, or UL1950 for data-processing equipment.
This device is a precision electronic instrument and must be repaired by trained Nonin personnel only. Field repair of the
device is not possible. Do not attempt to open the case or repair the electronics. Opening the case may damage the
device and void the warranty.
Any sign or evidence of opening the system, field service by non-Nonin personnel, tampering, or any kind of misuse or
abuse of the system, shall void the warranty in its entirety.
Failure of a network data coupling (serial cable/connectors) will result in loss of data transfer.
- venous pulsations
- anemia or low hemoglobin concentrations
- cardiogreen and other intravascular dyes
- carboxyhemoglobin
- methemoglobin
- dysfunctional hemoglobin
- artificial nails or fingernail polish.
- residue (e.g., dried blood, dirt, grease, oil) in the light
path
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