10.8 Pressure Support (PS, option)
Pressure Support (option) is a patient initiated
breathing mode in which the system supports
the patient with a set constant pressure.
The following parameters are set:
1. PS above PEEP (cmH
2
O, solid line in
illustration above)
2. PEEP (cmH
2
O, dotted line in
illustration above)
3. Inspiratory rise time (s)
4. Inspiratory Cycle-off (%)
5. Trigg. Flow / Trigg. Pressure (trigg events
indicated by vertical dotted lines in
illustration above)
6. Gas mix (O
2
/Air or O
2
/N
2
O)
7. O
2
concentration (%)
8. Fresh gas flow (l/min)
9. Agent concentration (%)
During Pressure Supported ventilation, the
patient regulates the respiratory rate and the
Tidal Volume with support from the system.
The higher the pre-set inspiratory pressure
level from the system, the more gas flows into
the patient. As the patient becomes more
active, the pressure support level may be
gradually reduced.
It is important to set the Inspiratory rise time
to a comfortable value for the patient. In
Pressure Support, the Inspiratory rise time
should normally be increased.
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FLOW-i 4.2, User's Manual
| 10
| Ventilation modes |