wrapping too tightly, applying supplemental tape, failing to inspect
periodically, or failing to position appropriately. Read the
instructions provided with the SpO
2
sensor carefully prior to use.
WARNING – Elevated levels of carboxyhemoglobin or
methemoglobin in monitored patients can result in inaccurate pulse
oximetry readings.
WARNING – A pulse oximeter should be considered as an early
warning device. As a trend towards patient deoxygenation is
indicated, blood samples should be analyzed by a laboratory co-
oximeter.
WARNING – Operating the PPM3 with SpO
2
limit alarms disabled
means that no low or high SpO
2
alarm conditions will produce alarm
notifications. Use this feature with extreme caution. Patients must
be closely observed if SpO
2
limit alarms are disabled.
CAUTION – The Nightingale PPM3 does not produce a SpO
2
alarm until a
valid SpO
2
signal is obtained. This is intended to reduce nuisance alarms
during initial patient connection.
CAUTION – Read instructions provided with the sensor to understand the
best application technique and all relevant safety information.
CAUTION – Do not apply the sensor on the same limb as the NBP cuff.
During blood pressure measurements, the perfusion is temporarily
reduced, which can result in inaccurate pulse oximetry readings.
CAUTION – Pulse oximetry sensors are susceptible to high ambient light
interference including surgical lights, especially xenon light sources,
ambient photodynamic therapy (e.g., Bilirubin lamps), fluorescent lights,
infrared heating lamps, direct sunlight. Shield the sensor as necessary.
CAUTION – Pulse oximetry readings may be inaccurate in the presence of
excessive motion artifact or tremors. If questionable readings are
obtained, re-check the patient’s vital signs by alternate means before
administering medication.
Note – If the SpO
2
waveform is not currently selected for display on the PPM3, follow the
instructions in the chapter on Working With Menus to select this waveform for display.
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