Figure 1From: Automatic versus manual pressure support reduction in the weaning of post-operative patients: a randomised controlled trialStudy design. FiO2 = fraction of inspired oxygen; MRV = mandatory rate ventilation; PEEP = positive end-expiratory pressure; PCV = pressure controlled ventilation; PSV = pressure support ventilation; RR = respiratory rate; SpO2 = arterial oxygen saturation; TV = tidal volume.Back to article page