Comparison of pre-BAS and post-BAS oxygenation parameters (n=25)
| Variable | Pre-BAS | Post-BAS | P value |
| FiO2 | 0.44±0.3 | 0.36±0.27 | 0.34 |
| PaO2 (mmHg) | 24±5 | 40±6 | <0.001 |
| PaO2/FiO2 | 83±44 | 155±64 | <0.001 |
| Oxygen saturations/FiO2 | 232±135 | 314±130 | 0.037 |
| Preductal oxygen saturations (%) | 67±18 | 81±11 | 0.003 |
| Oxygenation index* | 8.8 (6, 22) | 4.4 (3.3, 7.3) | 0.03 |
Oxygenation index=(MAP×FiO2)/paO2.
*Data were presented as median (IQR).
BAS, balloon atrial septostomy; FiO2, fractional inspired oxygen; IQR, interquartile range; MAP, mean airway pressure; paO2, partial pressure of oxygen.