Vc-Ac (Optional) - Dräger Carina Instructions For Use Manual

Principles of operation

VC-AC (optional)

Volume Control – Assist Control
Assisted-controlled, volume-controlled ventilation
with fixed inspiratory flow and backup frequency
with AutoFlow.
Volume-controlled ventilation
The tidal volume of the mandatory breaths is deter-
mined by the volume VT. The duration of the inspir-
atory phase of a mandatory breath is determined by
Ti. The pressure rise is determined by the Ramp
setting. The peak inspiratory pressure PIP is limited
by the Pmax setting.
Assisted-controlled ventilation
Every inspiratory effort of the patient on PEEP level
triggers a synchronized mandatory breath. Thus,
the time and number of mandatory breaths are de-
termined by the patient. The trigger window covers
the expiratory time minus a refractory period at the
beginning of the expiration. The expiratory time is
determined by the respiratory rate RR and the in-
spiratory time Ti.
A non-synchronized mandatory breath is triggered
at the latest at the end of the expiratory time
(backup respiratory rate).
The minimal number of mandatory breaths is deter-
mined by the respiratory rate RR.
Instructions for use Carina SW 3.2n 147