Pulse Oximeter
Malfunctions
66
Message
Cause
Solution
Low perfusion
The unit has determined
insufficient circulation for
reliable determination of
oxygen saturation values.
Remove the sensor and connect
at a different place.
Interference
The unit has determined
influence from a second
light source or a second
sensor.
Do not expose the sensor to a
direct light source.
Only use a new Masimo-Sensor.
Sensor not on Patient
The sensor is connected
to the unit, the unit is on,
but no patient can be
recognized.
Position the sensor correctly.
Ambient Light
The unit has determined a
scattered or foreign light
source. This can occur
with particularly strong
lighting from the outside
(especially from xenon or
similar lamps).
Do not expose the sensor to a
direct light source, or shade from
the outside.
Unknown Sensor
The unit has discovered a
sensor not approved for
this system.
Only connect approved Masimo-
Sensors!
Signal IQ too low!
The signal strength for
signal reliability is too low.
Remove the sensor and position
at a different place.