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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.
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