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Table 2 Blood gas analyses before and during high-frequency oscillation ventilation (HFOV)

From: High-frequency oscillation ventilation for hypercapnic failure of conventional ventilation in pulmonary acute respiratory distress syndrome

 

Before HFOV

After 1 h HFOV

P

After 24 h HFOV

P

Number of patients

26

26

 

24

 

PaCO2 (mmHg)

67.6 ± 12.3

53.9 ± 13.7

<0.001

50.4 ± 17.3

<0.001

pH

7.20 ± 0.069

7.28 ± 0.095

<0.001

7.34 ± 0.052

<0.001

PaO2/FiO2 (mmHg)

139 ± 49

125 ± 50

0.17

155 ± 52

0.16

  1. P values of paired t test. Two patients receiving extracorporeal lung support were omitted from 24-hour analysis. Values are given as mean ± standard deviation. PaCO2, arterial partial pressure of carbon dioxide; PaO2, arterial partial pressure of oxygen; FiO2, fraction of inspired oxygen.
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Critical Care

ISSN: 1364-8535