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Table 3 HFOV settings and gas exchange

From: The initial Mayo Clinic experience using high-frequency oscillatory ventilation for adult patients: a retrospective study

  Baseline 6 hours 24 hours Last†
N 16 12 11 16
Paw (cm H2O) 31 (3) 31 (3) 30 (2) 29 (4)*
Δ P (cm H2O) 64 (9) 64 (9) 64 (9) 70 (16)
Frequency (Hz) 5.3 (0.8) 5.3 (0.7) 5.3 (0.6) 5.2 (0.8)
FIO2 0.91 (0.14) 0.81 (0.14)* 0.73 (0.16)* 0.71 (0.21)*
PaO2 (mm Hg) 73 (29) 70 (14) 75 (9) 69 (11)
PaO2/FIO2 82 (30) 90 (27)* 107 (23)* 105 (33)*
Oxygenation index 42 (12) 37 (13) 29 (7)* 31 (13)*
PaCO2 (mm Hg) 51 (11) 49 (8) 48 (12) 50 (10)
pH 7.28 (0.16) 7.33 (0.12) 7.36 (0.11) 7.32 (0.16)
  1. Data is presented as mean (SD).
  2. * P < 0.05 when comparing with baseline values using Wilcoxon signed rank test. † Last settings and gas exchange before transitioning to conventional ventilation after a median (IQR) of 3.2 (0.9–6.5) days of HFOV.