as well as maximum pressure limits the ventilator is allowed to deliver the
set tidal volume within. The delivery of the breath is more gradual and
allows for lower peak pressures. Because the pressure will now change
with every breath based on the lung compliance at the time of that breath,
(up to a limit you’ve set), one may actually find that they are able to
ventilate an infant with even lower PIP’s than you would have otherwise
chosen if in SIMV.MAKING CONVENTIONAL VENTILATOR ADJUSTMENTS
Increasing PEEP
Benefits: Risks:
Maintains Functional Residual Capacity (FRC) Increased risk of air leak
Prevents alveolar collapse Decreases VTif no ↑ PIP
Increases Mean Airway Pressure (MAP) Can cause CO 2 retention
Improves oxygenation Reduces venous return
Splints obstructed airways Less compliant lung
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(^) Increasing PIP:
Benefits: Risks:
(^) Increases MAP Reduces venous return
Improves oxygenation Increased barotrauma,
Prevents atelectasis air leak, CLD
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