Fig. 4.
Summary of (A) arterial pH, (B) Paco2, (C) Pao2, (D) peak-to-peak tidal volume normalized by weight, (Vpp Wt−1), (E) root mean square volume normalized by weight (Vrms Wt−1), (F) ventilatory cost function (VC), (G) mean airway pressure (), (H) oxygenation index, and (I) dynamic respiratory system elastance (Edyn) versus time versus time during single-frequency oscillatory ventilation (SFOV, closed symbols) and multifrequency oscillatory ventilation (MFOV, open symbols). *Significant difference between SFOV and MFOV modalities, using two-way repeated-measures ANOVA with Tukey Honest Significant Difference criterion. †Significant interaction between SFOV and MFOV modality and time, based on Tukey Honest Significant Difference criterion. All data are expressed as mean ± standard error.