
Instructions for use Babylog 8000 plus SW 5.n
163
Principles of operation
High-frequency ventilation with CPAP
The high-frequency oscillations are continuously
being overlaid on the level of the mean pressure
(
PEEP/CPAP
).
High-frequency ventilation with IMV
The high-frequency oscillations are overlaid
between the IMV breaths and the PEEP/CPAP
level in the expiratory time
T
E
. They end
100 milliseconds before an IMV breath and
resume 250 milliseconds after the breath. The
pause following the breath is intended to allow
sufficient time to exhale and prevent air from being
trapped.
The ,
Pinsp
,
PEEP/CPAP
, and
T
I
settings
have an effect on IMV breaths.
Mean airway pressure is somewhat higher than
with high-frequency ventilation with CPAP due to
the IMV breaths.
However, during high-frequency phases, the
pressure oscillates at the PEEP/CPAP level again.
21
176
Paw
PEEP/C
PAP
Flow
t
t
21
177
Paw
PEEP/C
PAP
Flow
Pinsp
TI
t
t
insp