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B. Displays
1. SpO
Display
2
The left digital display is a 3-digit light emitting diode (LED) digital
display that indicates oxygen saturation percentage. Refer to
Figure III. Oxygen saturation is calculated by the methods outlined
in Section VII.
2. ♥ (Pulse Rate) Display
The right digital display is a 3-digit LED digital display that indicates
pulse rate in pulses per minute. Refer to Figure III.
3.
(Perfusion) Indicator
The perfusion indicator (identified by the waveform symbol
will flash once for each pulse while measuring oxygen saturation.
The perfusion indicator changes color to indicate changes in the
pulse waveform signal that may affect the SpO
The perfusion indicator may blink one of three colors: green, yellow,
or red. These colors are similar to the colors of a stoplight such that:
Red indicates the pulse amplitude is too small.
During red perfusion, SpO
are not updated. After ten seconds, the values are
replaced with dashes indicating SpO
measurement is not possible.
Yellow indicates the pulse waveform amplitude is
marginal or the pulse oximeter has detected artifact.
Although SpO
data is acceptable, corrective measures
2
should be considered to improve sensor placement,
change sensor type, or reduce patient movement.
Green indicates the pulse waveform signal is of good
quality and SpO
data is accurate.
2
•
The 920 may interpret motion artifact of
CAUTION
sufficient amplitude and regularity as
good perfusion (green).
15
)
data.
2
and pulse rate values
2
2
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