Table 7.

Arterial blood gas exchange data

Time Data	T0 $\overline{X}$± SD	T1 $\overline{X}$± SD	T2 $\overline{X}$± SD	T3 $\overline{X}$± SD	T4 $\overline{X}$± SD
pH	7.42 ± 0.02	7.42 ± 0.06	7.25 ± 0.04*	7.17 ± 0.05*	7.41 ± 0.06
PaCO2 (mmHg)	35.95 ± 3.32	42.17 ± 9.63	67.57 ± 14.71*	79.63 ± 13.39*	39.48 ± 5.17
PaO2 (mmHg)	101.1 ± 3.54	220.38 ± 62.08*	167.12 ± 76.23*	186.19 ± 60.14*	217.63 ± 74.63*
Lactat	1.0 ± 0.42	1.16 ± 0,51	1.06 ± 0.6	1.06 ± 00.58	1.26 ± 0.87
HCO3−(mEq/L)	23.35 ± 3.75	27.34 ± 5.45	29.79 ± 6.73*	30.03 ± 5.5*	25.98 ± 4.78
BE (mEq/L)	2.4 ± 0.99	4.57 ± 6.32	3.23 ± 6.08	2.91 ± 5.31	2.22 ± 4.99

*: p < 0.05 compared with T0