FIGURE 5.

An overlaping display of pressure waveforms of a control breath with reverse trigger and a control breath. Traces were acquired in patient No.4; Paw, airway pressure; PL, transpulmonary pressure; Peso, esophageal pressure. The black solid lines indicates the Paw, PL and Peso fluctuations during a mandatory or control breath. The red solid lines indicates the Paw, PL and Peso fluctuations during a breath with reverse trigger in the same patient. Comparing to the control breath, arising of patient effort or delta Peso may elevates PL during breath with reverse trigger.