Fig. 2.
Individual variations in Pao2/Fio2 ratio for the 14 patients after mechanical ventilation with pressure support ventilation (PSV; A) and with Intellivent (B). The horizontal bars represent the mean values. P value refers to the test of the first versus the last time point. Fio2 = inspired oxygen fraction; NS = not significant; Pao2 = partial pressure of arterial oxygen.