B-20 624074/07
B Modes of ventilation
Figure B-13. Pressure support in DuoPAP/APRV
B.5.3.5 Synchronization
To easily adapt to the patient’s spontaneous breathing pattern,
the change-overs from low to high pressure level and vice versa
are synchronized with the patient’s spontaneous breathing.
The frequency of the change-over is kept constant, even with
patient synchronization, by defining a trigger time window
with a fixed time constant. In APRV Tlow is not prolonged if the
patient breathes active.
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