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• The site must be checked at least every four (4)
hours to ensure adequate adhesion, circulation,
skin integrity and correct optical alignment. If
the circulatory condition or skin integrity has
deteriorated, the sensor should be applied to a
different site.
• Change the SpO
2
sensor measurement site
regularly, every eight hours for disposable and
every four hours for reusable sensors. The skin
temperature may increase at the attached site
by 2 °C or 3 °C degrees and cause a burn or
pressure necrosis.
• Avoid placing the sensor on any extremity with
an arterial catheter or blood pressure cuff.
• Do not use tape to secure the sensor to the site;
this can restrict blood flow and cause inaccurate
readings. Use of additional tape can cause skin
damage or damage the sensor.
• If the sensor is wrapped too tightly or supple-
mental tape is used, venous congestion/pulsa-
tions may occur, causing erroneous readings.
• Venous congestion may cause under-reading of
actual arterial oxygen saturation. Therefore,
assure proper venous outflow from monitored
site. The sensor should not be below heart level
(for example, sensor on hand of a patient in a
bed with arm dangling to the floor).
• Venous pulsations may cause erroneous low
readings (for example, tricuspid valve regurgi-
tation).
• The pulse CO-oximeter can be used during defi-
brillation, but the readings may be inaccurate
for up to 20 seconds.
• The pulse CO-oximeter is NOT intended for use
as an apnea monitor.
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