Table 2.
Comparison of blood-gas parameters between the two groups of patients before and after treatment (mean ± SD)
|
Group
|
Before treatment
|
Treatment 24 h
|
Treatment 48 h
|
Treatment 72 h
|
| PaO2 (mmHg) | ||||
| Sequential group (n = 54) | 36.11 ± 2.88 | 74.31 ± 4.17 | 85.32 ± 5.40 | 93.84 ± 5.50 |
| Regular group (n = 54) | 35.74 ± 3.01 | 70.58 ± 3.96 | 82.74 ± 4.86 | 91.70 ± 4.96 |
| t value | 0.653 | 4.766 | 2.610 | 2.123 |
| P value | 0.515 | 0.000 | 0.010 | 0.036 |
| PaCO2 (mmHg) | ||||
| Sequential group (n = 54) | 68.42 ± 3.03 | 54.29 ± 3.75 | 45.63 ± 3.80 | 37.03 ± 3.94 |
| Regular group (n = 54) | 69.03 ± 2.96 | 55.70 ± 4.03 | 46.80 ± 4.25 | 38.64 ± 4.41 |
| t value | -1.058 | -1.882 | -1.508 | -2.001 |
| P value | 0.292 | 0.063 | 0.135 | 0.048 |
| pH (mmHg) | ||||
| Sequential group (n = 54) | 7.22 ± 0.05 | 7.33 ± 0.05 | 7.37 ± 0.05 | 7.39 ± 0.04 |
| Regular group (n = 54) | 7.23 ± 0.05 | 7.31 ± 0.04 | 7.36 ± 0.05 | 7.37 ± 0.05 |
| t value | -1.039 | 2.295 | 1.039 | 2.295 |
| P value | 0.301 | 0.024 | 0.301 | 0.024 |
PaO2: Oxygen partial pressure; PaCO2: Carbon dioxide partial pressure.