10.8.1 Pressure Support in detail
3
1
2
Pressure support properties
1. Pressure Support ensures that a preset
inspiratory pressure level is constantly
maintained upon patient effort.
2. The preset pressure level is controlled by
the system, while the patient determines
frequency and inspiration time.
3. Inspiration starts when the patient triggers.
Numbering refers to illustration above.
Expiration criteria
Expiration begins:
• When the inspiratory flow falls below a
preset fraction of the inspiratory peak flow
(Inspiratory cycle-off)
• If the upper pressure limit is exceeded.
• Maximum time for inspiration is exceeded.
Inspiration criteria
When the patient triggers a breath according
to the set trigger sensitivity.
Triggered breaths are highlighted in the
waveform display area, see Chapter 5, page
103 for more information.
FLOW-i 4.2, User's Manual
223
| Ventilation modes |
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