Correlations between change in atrial septal defect size and change in oxygenation variables (n=25)
| Variable | R | P value |
| FiO2 | −0.01 | 0.96 |
| PaO2 | −0.08 | 0.68 |
| PaO2/FiO2 | −0.19 | 0.35 |
| Oxygen saturations/FiO2 | −0.08 | 0.7 |
| Preductal oxygen saturations | 0.22 | 0.28 |
| Oxygenation index | 0.23 | 0.26 |
Oxygenation index=(MAP×FiO2)/paO2.
FiO2, fractional inspired oxygen; MAP, mean airway pressure; paO2, partial pressure of oxygen.