Chapter 3 Modes, Features, and Alarms
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Circuit Disconnect Alarm
This is a high priority alarm. It occurs when the breathing circuit
is disconnected or has a large leak. The device continues to
operate. The alarm will automatically terminate when the circuit is
reconnected or the leak is xed.
Apnea Alarm
This is a high priority alarm. It occurs when the patient has not
triggered a breath within the time specied in the apnea alarm
setting. The device continues to operate. The alarm will automatically
terminate when two consecutive patient breaths are detected that
meet the apnea alarm time setting.
High Vte Alarm
This is a high priority alarm. It occurs when the estimated exhaled
tidal volume is greater than the High Vte alarm setting for three
consecutive breaths. The device continues to operate. The alarm will
automatically terminate when a breath occurs in which the exhaled
tidal volume does not reach the High Vte alarm setting.
Low Vte Alarm
This is a high priority alarm. It occurs when the estimated exhaled
tidal volume is lower than the Low Vte alarm setting for three
consecutive breaths. The device continues to operate. The alarm will
automatically terminate when a breath occurs in which the exhaled
tidal volume exceeds the Low Vte alarm setting.
When AVAPS is on, this alarm will occur when the calculated tidal
volume is less than 90% of the target tidal volume setting. The alarm
will automatically terminate when a breath occurs in which the
exhaled tidal volume is equal or greater to 90% of the target tidal
volume setting.
WARNING
You should not rely on any
single alarm to detect a circuit
disconnect condition. The Low
Tidal Volume, Low Minute
Ventilation, Low Respiratory
Rate, and Apnea alarms should
be used in conjunction with
the Circuit Disconnect alarm.
The Apnea alarm is only
intended for spontaneously
breathing patients.