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2 - 34 0070-10-0666-01 Trio™ Operating Instructions
CAUTION: Do not place the SpO2 sensor on an extremity with an
invasive catheter or blood pressure cuff in place.
CAUTION: Tissue damage or inaccurate measurement may be caused
by incorrect sensor application or use, such as wrapping too
tightly, applying supplemental tape, failing to inspect the
sensor site periodically or failing to position appropriately.
Carefully read the sensor directions and all precautionary
information before use.
CAUTION: Inaccurate SpO2 measurements may be caused by:
• incorrect sensor application or use
• significant levels of dysfunctional hemoglobins, (e.g.,
carboxyhemoglobin or methemoglobin)
• intra-vascular dyes such as indocyanine green or
methylene blue
• exposure to excessive illumination such as surgical
lamps (especially ones with a xenon light source),
bilirubin lamps, fluorescent lights, infrared heating
lamps, or excessive ambient light. In such cases, cover
the sensor site with opaque material.
• excessive patient movement
• venous pulsations
• electro-surgical interference
• placement of a sensor on an extremity that has a blood
pressure cuff, arterial catheter or intra-vascular line.
• nail polish or fungus
CAUTION: In certain situations in which perfusion and signal strength
are low, such as in patients with thick or pigmented skin,
inaccurately low SpO2 readings will result. Verification of
oxygenation should be made, especially in preterm infants
and patients with chronic lung disease, before instituting
any therapy or intervention.
CAUTION: Many patients suffer from poor peripheral perfusion due to
hypothermia, hypovolemia, severe vasoconstriction,
reduced cardiac output, etc. These symptoms may cause a
loss in vital sign readings.
CAUTION: If the sensor or patient cable are damaged in any way,
discontinue use immediately. To prevent damage, do not
soak or immerse the sensor in any liquid solution. Do not
attempt to sterilize.
CAUTION: Excessive ambient light may cause inaccurate
measurements. In such cases, cover the sensor site with
opaque material.
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