How is a pressure triggering ventilator used to treat respiratory failure?

Updated: Apr 07, 2020
  • Author: Ata Murat Kaynar, MD; Chief Editor: Michael R Pinsky, MD, CM, Dr(HC), FCCP, FAPS, MCCM  more...
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Answer

With pressure triggering, the ventilator is set to detect a certain change in pressure. The ventilator is triggered whenever airway pressure drops by the set amount. For example, in a patient on no positive end-expiratory pressure (PEEP) with a trigger sensitivity set at 1 cm water, a breath is triggered whenever airway pressure falls below –1 cm water. In a patient on 5 cm water PEEP with the same trigger sensitivity, a breath is triggered whenever airway pressure falls below +4 cm water.


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