Nellcor OXIMAX N-600X Series, Руководство оператора

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Using SatSeconds
N-600x Operator’s Manual 163
U s i n g S a t S e c o n d s
Overview
With traditional alarm management, upper and lower alarm limits are
set for monitoring oxygen saturation. During monitoring, as soon as
an alarm limit is violated by as little as one percentage point, an
audible alarm immediately sounds. When the %SpO
2
level fluctuates
near an alarm limit, the alarm sounds each time the limit is violated.
Such frequent alarms can be distracting.
The N-600x pulse oximeter utilizes Nellcor SatSeconds alarm
management technique. With the SatSeconds technique, upper and
lower alarm limits are set in the same way as with traditional alarm
management. The clinician also sets a
SatSeconds limit that allows
the monitoring of %SpO
2
below the selected low alarm limit for a
period of time before an audible alarm sounds.
The SatSeconds limit controls the time that the %SpO
2
level may fall
outside the alarm before an audible alarm sounds.
The method of calculation is as follows:
The number of percentage points that the %SpO
2
falls outside of the
alarm limit is multiplied by the number of seconds that the %SpO
2
level remains outside that limit. This can be stated as an equation:
Points x Seconds = SatSeconds
Where:
Points = %SpO
2
percentage points outside of the limit
Seconds = number of seconds the %SpO
2
remains at that point
outside of the limit