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6Alarms
The alarm information here applies to all measurements. Measurement-specific alarm information is
contained in the sections on individual measurements.
The fetal monitor has two different types of alarm: patient alarms and INOPs.
Patient Alarms
Patient alarms are red and yellow alarms. A red alarm indicates high priority, such as a potentially life
threatening situation (for example, SpO
2
below the desaturation alarm limit). A yellow alarm indicates
a lower priority alarm (for example, a fetal heart rate alarm limit violation).
INOPs
INOPs are technical alarms. They indicate that the monitor cannot measure and therefore not detect
critical conditions reliably. If an INOP interrupts monitoring and alarm detection (for example,
MECG
Leads Off
), the monitor places a question mark in place of the measurement numeric and sounds an
audible tone. INOPs without this tone indicate that there may be a problem with the reliability of the
data, but that monitoring is not interrupted.
INOPs are cyan by default. The following INOPs can also be configured as red or yellow INOPs to
provide a severity indication:
•
ECG Leads Off
• Battery Empty (FM20/30, CL devices)
•
Cuff Overpress
• Cuff NotDeflated
• No Pulse
Alarm Delays
There is a delay between a physiological event at the measurement site and the corresponding alarm
indication at the monitor. This delay has two components:
• The general measurement delay time is the time between the occurrence of the
physiological event and when this event is represented by the displayed numerical values.
This delay depends on the algorithmic processing and on the measurement dependent averaging
time.
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