Operator's Manual

Rad-97 Chapter 13: Alarms and Messages
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a visual alert will display and a reminder tone will repeat every 15 minutes as long
as the condition persists. If the SpO
2
value drops below the ATA low alarm limit, an
audible alarm will activate.
Rapid Desat Alarm Protection
The Rapid Desat feature is always active when ATA is enabled. This means that
deep desaturations (5% or 10%) from the standard SpO
2
low alarm limit generate
audible and visual alarms. When used with ATA, Rapid Desat also serves as
absolute low alarm limit protection. SpO
2
values exceeding the Rapid Desat low
alarm limit, whether rapid or not, will activate audible and visual alarms. The user
can select a Rapid Desat default of 5% or 10% desaturation.
Note: ATA does not allow a Rapid Desat setting of 0%.
When ATA is turned Off, the device uses the standard alarm limits and standard alarm delays.
See About Alarms on page 154
See SpO2 Alarms on page 66
3D Alarms
3D Alarms, accessible from the Main Menu, include the following:
Desat Index on page 159
About Desat Index on page 158
Pi Delta on page 160
About Pi Delta on page 159
About Desat Index
The 3D Desat Index Alarm allows a clinician to request audible and visual alarms if a patient
experiences a specified number of desaturations beyond a defined level from the patient's
baseline saturation over a specific period of time.
Traditional high and low SpO
2
alarm limits alert clinicians to saturation levels that exceed
user-selected thresholds. These thresholds are typically established to detect significant