Penlon AV-S, Service Manual, Page: 32 / 94

DESCRIPTION
26
3.7.5.3 PSV
Pressure Supported
Ventilation
PSV assists each spontaneous breath to
achieve
a preset pressure, thus reducing the
effort required to breathe
Inspiratory flow (generated by the
patient’s spontaneous breath) results in
synchronised
pressure support
PSV is used to support
spontaneously breathing patients
ONLY
If the patient makes no attempt to
breathe, the ventilator will not provide
support and the apnoea alarm will be
activated
PSV - Selection
Select Standby Mode
Select Menu
Select Special Modes
Select PSV
PSV is now on the main screen in
Spontaneous mode.
NOTE
1.
The trigger window is pre-set to
60% of the BPM cycle time.
2. The trigger pressure is PEEP
referenced.
3. If the Spirometry is disabled then
PSV is not available.
4. If the pressure limit and alarm are
activated the inspiratory phase is
terminated.
PSV Default Settings
The ventilator will default to the settings
shown in the table, after selecting 'PSV'
from Spontaneous Mode.
Note that Support Pressure can be
adjusted before PSV is confirmed.
Trigger setting defaults to 0.4 litres/min,
and is adjustable between 0.2 and 1.0
litres/min.
Default Settings - PSV
Adult Paediatric Overall range
P. Supp 10 cmH
2
O 10 cmH
2
O 3-20 cmH
2
O
Insp. (Ti) 2 sec 1 sec I:E display box
Trigger level 0.4 L/min 0.4 L/min 0.2 to 1.0 L/min
PEEP
0 cmH
2
O
A
PSV Pressure Supported Ventilation
A = Set Inspiratory Time
B = Pressure Support Level
C = Spontaneous Breath results in a synchronised pressure supported breath
A
B
C C