American Society of Anesthesiologists

Fig. 2. Fraction of inspired oxygen (Fio2), arterial oxygen partial pressure (Pao2)/Fio2, positive end-expiratory pressure (PEEP), and Shunt ratio (QS/QT) in the 3 groups over the course of the study. Fio2(P < 0.0005), Pao2/Fio2(P < 0.0001), PEEP (P < 0.0001), and QS/QT(P < 0.0001) had significant group-versus -time interactions:P < 0.05 versus *control, #RM, and †30 min.

Fig. 2. Fraction of inspired oxygen (Fio²), arterial oxygen partial pressure (Pao²)/Fio², positive end-expiratory pressure (PEEP), and Shunt ratio (Q^S/Q^T) in the 3 groups over the course of the study. Fio²(P < 0.0005), Pao²/Fio²(P < 0.0001), PEEP (P < 0.0001), and Q^S/Q^T(P < 0.0001) had significant group-versus -time interactions:P < 0.05 versus *control, #RM, and †30 min.

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