19
Setting up the Alarms
Disconnection 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 disconnection alarm is tested with the circuit and
interface/tube used by the patient to ensure the device alarms appropriately -see
page 21 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. A full risk assessment
must be carried out and documented before activating this setting, and must only
be set by the prescribing physician.
Apnoea alarm
Select USER PREFERENCES from the main menu. From the OPTIONS
MENU, select APNOEA ALARM.
To activate the apnoea alarm, select ON
and select the required delay.
The total number of apnoeas during the last
seven days or since reset, will be displayed
along with the time duration of the longest
single apnoea.
Press + and
– together to reset the apnoea
count.
An apnoea is defined as a cessation of spontaneous breathing for the set time
delay. Ventilation will continue at the backup rate during apnoea events.
