3.4 Changing the number of blood air artery 3.4.1 Changing the number PaO2 of the both groups Chart 3.6: Changing PaO2 of the both groups 12 Comments: The number PaO2 at the moment after mobilizing alveolus 5 minutes and before finishing breathing machine is higher than that before mobilizing alveolus. This improvement has its meaningful statistic with p < 0.05.