Gastric pressure monitoring unveils abnormal patient-ventilator interaction related to active expiration: a retrospective observational study.

Active expiration can impair patient-ventilator interaction in critically ill patients. Without documenting Pgas, abnormal patient-ventilator interaction associated with expiratory muscle contraction may be mistakenly attributed to a mismatch between the patient´s inspiratory effort and mechanical inflation. This misinterpretation could potentially influence decisions regarding clinical management.