5.7 Pressure Support
5.7.1 Functional description Pressure
Support
Pressure Support is a patient initiated
breathing mode in which the ventilator
supports the patient with a set constant
pressure.
Inspiration is supported by a constant preset
pressure when activated by patient effort. The
patient determines frequency and duration of
the breaths, which show a decelerating flow
pattern. Inspiratory breath duration can be
influenced by adjusting the End inspiration
criteria.
7
8
9
5
6
4
1
2
3
SVS-5045_XX
The following parameters are set:
1. PS (Pressure Support level) above PEEP
(cmH
2
O)
2. PEEP (cmH
2
O)
3. Oxygen concentration (%)
4. Inspiratory rise time (s)
5. Trigg. Flow / Trigg. Pressure
6. End inspiration (%)
7. PC above PEEP (cmH
2
O) in backup
ventilation
8. Resp.Rate (b/min) in backup ventilation.
9. I:E / Ti (s) in backup ventilation (depending
on configuration).
SVS-5044_XX
During Pressure Supported ventilation the
patient regulates the respiratory rate and the
Tidal Volume with support from the ventilator.
The higher the pre-set inspiratory pressure
level from the ventilator the more gas flows
into the patient. As the patient becomes more
active the pressure support level may be
gradually reduced.
SERVO-s VENTILATOR SYSTEM V8.0, User's Manual
73
| Ventilation, modes and functions |
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