Figure 4From: Automatic versus manual pressure support reduction in the weaning of post-operative patients: a randomised controlled trialVariation of tidal volume throughout weaning. Each tidal volume value refers to increments of 30 minutes in the weaning process. There was no significant difference between the automatic mode and the manual mode (p = 0.31). The numbers at the bottom of the figure refer to the number of patients that stayed in the weaning trials through time.Back to article page