Fig. 4From: Occurrence of pendelluft under pressure support ventilation in patients who failed a spontaneous breathing trial: an observational studyPendelluft gas movement direction in the high-pendelluft group. In the high-pendelluft group, the movement of gas subject to pendelluft was almost entirely directed towards the dorsal regions of interest, while the amount directed towards the ventral ones was minimal (PSV, pressure support ventilation)Back to article page