11-2
11.1.2 Alarm Levels
By severity, the anesthesia machine’s alarms fall into three categories: high level alarms,
medium level alarms and low level alarms.
1. High level alarms
Indicates that the patient is in a life threatening situation and an emergency treatment is
demanded.
2. Medium level alarms
Indicates that the patient’s vital signs appear abnormal and an immediate treatment is
required.
3. Low level alarms
Indicates that the patient’s vital signs appear abnormal and an immediate treatment may
be required.
The level for all technical alarms and some physiological alarms are preset before the
anesthesia machine leaves the factory and can not be changed. But for some physiological
alarms, the level is user adjustable.
11.2 Alarm Indicators
When an alarm occurs, the anesthesia machine will indicate it to the user through visual or
audible alarm indications.
Alarm lamp
Alarm message
Flashing numeric
Audible alarm tones
11.2.1 Alarm Lamp
If an alarm occurs, the alarm lamp will flash. The flashing color and frequency match the
alarm level as follows:
High level alarms: the lamp quickly flashes red.
Medium level alarms: the lamp slowly flashes yellow.
Low level alarms: the lamp turns yellow without flashing
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