It may be necessary to use a low Vt to avoid high airway pressures and/or a low respiratory rate to avoid auto-PEEP
, thus permitting hypoventilation and hypercapnia.
Dynamic hyperinflation and auto-PEEP
remained clinically unrecognized long after the era of positive pressure ventilation had begun.
- Positive End Expiratory Pressure (PEEP) that is not set by the clinician.
Decreased patient-ventilator synchrony can cause elevated Auto-PEEP
, leading to delayed triggering or even wasted triggering efforts.
Paw is considered important enough that we dutifully inscribe plateau, PEEP, mean airway pressure and auto-PEEP
on our permanent patient records, attaching meaning to their values and setting alarms by their guidelines.
Problems with inadequate hydration, unintended auto-PEEP
and trauma to the proximal airway mucosa limited its rate of adaptation.
The patient-influenced PTP must partition into three pressure components--resistive pressure, tidal elastic pressure, and auto-PEEP
In using very brief release times, APRV seeks to maintain auto-PEEP
of a level sufficient to prevent widespread airway closure.