Covidien Nellcor OxiMax N-600x, Руководство оператора

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Operating the Oximeter
58
Operator’s Manual
4. Press the EXIT softkey to save your selection.
Figure 43. Pulse Rate Delay Setting
Using the SatSeconds™ Alarm Management Feature
How the SatSeconds Feature Works
The oximeter monitors the percentage of hemoglobin binding sites saturated with
oxygen in the blood. With traditional alarm management, upper and lower alarm
limits are set to alarm at specific SpO
2
levels. When the SpO
2
level fluctuates near an
alarm limit, the alarm sounds each time it violates the alarm threshold. SatSeconds
monitors both degree and duration of desaturation as an index of desaturation
severity. Thus, the SatSeconds feature helps distinguish clinically significant events
from minor and brief %SpO
2
limit desaturations that may result in nuisance alarms.
See First SpO2 Event: No SatSeconds Alarm, Figure 5 on page 14, Second SpO2 Event:
No SatSeconds Alarm, Figure 6 on page 15, and Third SpO2 Event: Triggers SatSeconds
Alarm, Figure 7 on page 16.
Set upper and lower alarm limits using traditional alarm management methods.
Then, use SatSeconds alarm management to defer the audible alarm for the
specified period, even if the SpO
2
is below the selected lower alarm limit.
Saturation levels may fluctuate, rather than remain steady, for a period of several
seconds. Often, the SpO
2
levels fluctuate above and below the alarm limit,
reentering the non-alarm range several times.
During such fluctuations, the oximeter integrates the number of SpO
2
points, both
positive and negative, until either the SatSeconds limit (SatSeconds time setting) is
reached, or the SpO
2
level returns to within a normal range and remains there.
SatSeconds “Safety Net”
The SatSeconds “Safety Net” is for patients with saturation levels frequently below
the limit, but not staying below the limit long enough for the SatSeconds time
setting to be reached. When three or more limit violations occur within 60 seconds,
an alarm sounds even if the SatSeconds time setting has not been reached.