Fig. 2

Blood gases variations immediately before and after surfactant administration. a: PaO2 variations before and after treatment. b: PaCO2 variations before and after treatment. c: pH variations before and after treatment. d: P/F variations before and after treatment. e: OI variations before and after treatment. Legend: Connecting line in each figure suggests the mean values. PaO2 = oxygen arterial pressure; PaCO2 = carbon oxide arterial pressure; P/F = oxygen partial pressure inspired oxygen fraction ratio; OI = Oxygenation Index; pre = before treatment; post = after treatment; d = day; OI data available only for 42 children