- The PaO2 of 'intervention' group after is higher than before mobilization, in detail: After mobilizing 5 minutes (207.5 ± 17.99 mmHg comparing with 167.8 ± 14.34 mmHg; p < 0.01); before finishing breathing machine (181.4 ± 12.3 mmHg so với 167.8 ± 14.34 mmHg, p < 0.05).