Monitoring
218
Instructions for use Zeus Infinity Empowered SW 2.n
SpO2 safety instruction
Good vascular circulation is important for SpO
2
monitoring. In the event of shock, hypothermia,
anemia or after administration of vasoactive medi-
cations that impair circulation, the SpO
2 values may
not be reliable.
Patient preparation
z Nail varnish must be removed at the sensor ap-
plication site.
z Cut finger nails as needed.
z Bright ambient light can lead to unreliable
measuring results.
Tips for avoiding artefacts
Do not continue to use damaged sensors with un-
covered electrical contacts – risk of electric shock.
Do not tighten the adhesive strap too firmly.
Never use two adhesive straps as this can lead to
venous pulsation. The pulse signal can fail.
High intrathoracic pressure, Valsalva’s maneuver
or other consecutive impairments of venous back-
flow can cause venous pulsation. The pulse signal
can fail.
Avoid positioning the sensor on extremities with ar-
terial catheter, blood pressure cuff, or intravascular
venous infusion. Otherwise the pulse signal may
fail and measurement may be inaccurate.
Substantial amounts of dyshemoglobins such as
carboxyhemoglobin or methemoglobin can lead to
inaccurate measurements.
Intravascular dyes such as methylene blue can
lead to inaccurate measurements.
Electrocautery can influence the measuring accu-
racy. Arrange the cables of the device and the sen-
sor as far away as possible from the electrocautery
and its neutral electrode.
Sensor performance may be impaired by strong
movements of the patient and lead to inaccurate
measurements. Change the application site to re-
duce motion artefacts.
WARNING
Sensors and application sites must be
checked every two to three hours. If the skin is
being irritated by the sensor or if circulation is
being impaired, the sensor must be posi-
tioned at a different site immediately.
WARNING
Only sensors approved by Dräger may be
used. Other sensors may not provide ade-
quate protection during defibrillation. Note the
instructions for use of the SpO
2 sensors.
WARNING
For Nellcor and Masimo, only intermediate ca-
bles recommended by Dräger with a lock may
be used. Other cables must not be used.
WARNING
Never use a pulse oximeter as an apnea mon-
itoring device.
WARNING
Carboxyhemoglobin may erroneously in-
crease readings. The degree of the deviation
corresponds approximately with the actual
percentage of carboxyhemoglobin. Dyes and
substances containing dyes that change arte-
rial pigmentation can also generate incorrect
measurements.
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