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A sudden change in patient flow will cross the shape signal, causing the pressure level to change.
| IPAP |
|
Pressure |
|
|
| EPAP |
|
|
| Cycle to |
| Shape | EPAP |
| Crossover | |
| Signal | |
| Point | |
|
| |
Flow | Estimated |
|
| Patient |
|
Flow
Trigger to |
|
IPAP |
|
Crossover | Shape Signal |
Point |
|
Tracking the patient’s flow pattern with the Shape Signal provides a sensitive mechanism to trigger to inspiration or cycle to expiration in response to changing breathing patterns and circuit leaks.
