Fig. 93: PSV
With increasing inspiration progress, the flow delivered by the ventilator
drops and approaches zero towards the end when the lung has been filled
completely. This effect can be used for better syncing of the ventilation
process as follows:
With PSV enabled, the ventilator stores the inspiratory peak flow during
inhalation. Expiration is initiated as soon as the flow has dropped to the
previously set percentage for the inspiratory peak flow. The Expiration
Trigger Sensitivity (ETS %) is used for this setting.
Fig. 94: PC-SIMV with PSV parameter setting
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