Specifications

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necessary; move the sensor to a new site; use a sensor that
tolerates more motion.
If an ESU is interfering:
• Move the SpO
2
cable as far from the ESU as possible.
• Plug the Monitor and the ESU into different AC circuits.
• Move the ESU ground pad as close to the surgical site as
possible.
• The sensor may be damp or may need to be replaced with a
new sensor.
• If using a sensor extension cable, remove it and connect the
sensor directly to the Compact Monitor.
• If the patient weighs less than 3 kg or more than 40 kg, apply
an OXISENSOR N-25 oxygen transducer to an appropriate
site. This sensor has added protection against electrosurgical
interference.
PROBLEM: The oxygen saturation measurement does not
correlate with the value calculated from a blood gas
determination.
CAUSE:
• The SpO
2
calculation may not have correctly adjusted for the
effects of pH; temperature; CO
2
; fetal hemoglobin; or 2,3-
DPG.
• Accuracy can be affected by incorrect sensor application or
use; intravascular dyes; bright light; excessive patient
movement; venous pulsations; electrosurgical interference;
and placement of a sensor on an extremity that has a blood
pressure cuff, arterial catheter, or intravascular line.
SOLUTION:
• Check that calculations have been corrected appropriately for
the relevant variable. In general, calculated saturation values
are not as reliable as direct laboratory hemoximeter
measurements.
• If there is excessive light, cover the sensor with opaque
material.
COMPACT MAN-REV B 1/12/99, 9:47 AM38