P-Simv - Siare Siaretron 4000 User Manual

4.8.9 P-SIMV

Pressure-targeted synchronised intermittent mandatory
ventilation.
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The system displays all PRP relative to the set
operating mode.
P-SIMV is a synchronised intermittent mandatory ventilation, during which the lung
ventilator generates a certain number of breaths per minute (RRsimv) at a pre-set
inspiratory pressure (Pinsp) providing pressure support (PS) during the spontaneous
phase.
SIMV allows the patient to breath spontaneously, between the forced breaths, with a pre-
set positive pressure support (PS) if the patient's breath is strong enough to activate the
flow trigger (Tr. I - this parameter can't be set to OFF).
The spontaneous phase is characterised by the set inspiration time (Ti) that once the
pressure support value (PS) set by the clinician is reached, leaves its place to the
expiration phase (Tr. E).
Therefore, in SIMV mode, the lung ventilator can provide a combination of spontaneous
and controlled breathing. SIMV mode is frequently used as a weaning ventilation mode
from a fully controlled ventilation (completely depending on the lung ventilator) to an
assisted ventilation mode.
Siaretron4000e
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