Table 2.

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.