Table 3.

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.