Covidien Nellcor Series, Operator'S Manual

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SatSeconds™ Alarm Management Feature
Operator’s Manual 10-7
10.6.3
Third SpO
2
Event
Consider the third event. Suppose the SatSeconds™ alarm limit is still set to 25.
During this event, the patient’s SpO
2
drops to 75%, which is 10% below the lower
alarm threshold of 85%. Since the patient’s saturation does not return to a value over
the lower alarm threshold within 2.5 seconds, an alarm sounds.
At this level of saturation, the event cannot exceed 2.5 seconds without invoking a
SatSeconds™ alarm.
Figure 10-5. Third SpO
2
Event: Triggers SatSeconds™ Alarm
10% drop below the lower alarm limit threshold
x2.5 second duration below the lower threshold
25 SatSeconds ™; results in an alarm