Initially, the pressure curve within the individual LIAM stroke is comparable with a normal
ventilation stroke. When the IPAP pressure level is reached, however, pressure continues to
rise in linear form to maximum pressure IPAP
max
(IPAP + ŋP
LIAM
) and is maintained for
one second (plateau phase). The plateau phase at the end of insufflation is to facilitate
the coordination (closure of the glottis) of a coughing maneuver. The start of the plateau
phase is audibly emphasized by an optional plateau signal. This plateau signal can be
switched on and off in the menu under LIAM info (see “5.7.1 Activate/deactivate plateau
signal” on page 57). You can also have the following values displayed under LIAM info:
Duration, Interval and Cycles. LIAM ends automatically once the set duration has
elapsed or can be cancelled manually (see “5.10.3 Canceling LIAM” on page 61).
5.10.2 Method
You can trigger LIAM manually during ventilation. Press
the key to do so. The device switches to LIAM mode
and insufflation is started to synchronize with the next
inspiration.
You can perform the whole process yourself several
times. Press the key again to do so.
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