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Traces of Paw, PL and Pes during reverse trigger episodes. The vertical dashed line indicates an initiation of a patient effort which is express as the negative fluctuation of esophageal pressure, the arrow indicates a breath with reverse trigger. (A) Stable reverse trigger (1:1 entrainment) traces acquired in patient No.2; (B) unstable reverse trigger traces acquired in patient No.4. Paw, airway pressure; PL, transpulmonary pressure; Peso, esophageal pressure.
