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Table 2 Conventional ventilation settings and gas exchange before and after HFOV

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

 

Initial

Immediately Before HFOV

After HFOV

Number of patients

14

14*

12

Volume control ventilation

12

9

7

Pressure control ventilation

2

7

6

Tidal volume (mL/Kg †)

7.1 (2.1)

6.1 (1.0)

6.2 (1.3)

PEEP (cm H2O)

13 (5)

14 (4)

13 (4)

Peak airway pressure (cm H2O)

37 (10)

39 (5)

34 (7)

Plateau pressure (cm H2O)

35 (11)

35 (6)

32 (11)

Mean airway pressure (cm H2O)

19 (6)

24 (4)

20 (5)

Respiratory rate (per minute)

24 (7)

28 (6)

24 (4)

Minute ventilation (L/minute)

12 (4)

11 (3)

10 (4)

FIO2

0.95 (0.11)

0.91 (0.16)

0.75 (0.23)

PaO2 (mm Hg)

81 (33)

63 (8)

67 (17)

PaCO2 (mm Hg)

52 (14)

57 (17)

56 (12)

pH

7.28 (0.12)

7.26 (0.15)

7.28 (0.15)

PaO2/FIO2

89 (47)

73 (20)

96 (34)

Oxygenation index

27 (16)

35 (10)

26 (16)

  1. Data is presented as mean (SD).
  2. * In one patient HFOV was used three times; † Predicted body weight;