26
Disconnection Alarm
The disconnection alarm acts as a back up to the high flow alarm.
The inspiratory and expiratory flow waveform of the patient is analysed. If the
waveform indicates that a significant leak maybe present in the breathing circuit an
audible and visual alarm will operate after 10 seconds.
There are three different sensitivity levels or it may be disabled if not required.
Select the appropriate sensitivity level for your patient. Press SET to store the
setting.
It is essential that the high flow and disconnection alarms are tested with the circuit
and interface/tube used by the patient to ensure the device alarms appropriately -
see page 27 testing alarms.
High Sensitivity
– The alarm will be activated
during the detection of a leak which is less
than that required to trigger the standard
sensitivity setting. This may be useful for very
restrictive breathing circuits or small
tracheostomy tubes.
Standard Sensitivity
– Default level
.
Low Sensitivity
– The alarm will be activated
during the detection of a leak which is greater
than that required to trigger the standard
sensitivity setting. This may be useful where mask leaks cause nuisance
disconnect alarms. Verify that patient is properly ventilated during these periods
before using the Low setting.
Disabled
– Disconnect alarm is switched off. Useful where mouth breathing or
excessive leak causes nuisance disconnect alarms. Verify that patient is properly
ventilated during these periods before using this setting. The High Flow alarm will
activate if a flow exceeds the set threshold. A full risk assessment must be carried
out and documented before activating this setting, and must only be set by the
prescribing physician.