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Statistical analysis of the changes in ventilation and oxygenation with changes in gas mixture in 10 infants with bronchiolitis who were on mechanical ventilation |
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| Gas mixture |
PaCO2 (mmHg) |
PaO2/FiO2 |
PaO2/PAO2 |
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| 50%/50% Nitrogen/oxygen |
45 ± 10 |
267 ± 108 |
0.43 ± 0.17 |
| 50%/50% Heliox |
44 ± 10 |
267 ± 95 |
0.43 ± 0.15 |
| 60%/40% Heliox |
43 ± 11 |
275 ± 87 |
0.45 ± 0.14 |
| 70%/30% Heliox |
42 ± 12 |
259 ± 55 |
0.45 ± 0.09 |
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Values are expressed as mean ± standard deviation. Two-factor, repeated-measures analysis of variance found no statistically significant difference between the mean values for PaCO2, PaO2/FiO2, and PaO2/PAO2 for the different gas mixtures (P = 0.93, P = 0.98, and P = 0.96, respectively). | |||
Gross et al. Critical Care 2000 4:188 doi:10.1186/cc692 |
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