Table 3 Levels of positive end-expiratory pressure achieved and corresponding levels of gastric mucosal pH, and partial tissue and arterial carbon dioxide tension gap
pHi | P(t-a)CO2 | |||||||
|---|---|---|---|---|---|---|---|---|
Patient number | PEEPopt (cmH2O) | PEEPmax (cmH2O) | At PEEPbaseline | At PEEPopt | At PEEPmax | At PEEPbaseline | At PEEPopt | At PEEPmax |
1 | 7 | 9 | 7.46 | 7.4 | 7.4 | -1.7 | -1 | -3.5 |
2 | 13 | 15 | 7.45 | 7.43 | 7.33 | -1.7 | 6.7 | 17.5 |
3 | 17 | 17 | 7.26 | 7.28 | 7.28 | 3 | -2 | -2 |
4 | 5 | 15 | 7.19 | 7.19 | 7.16 | 10.2 | 8 | 13 |
5 | 7 | 11 | 7.45 | 7.37 | 7.32 | -3.4 | 3.4 | 11 |
6 | 15 | 15 | 7.23 | 7.05 | 7.05 | -0.7 | 11.6 | 12.6 |
7 | 7 | 15 | 7.24 | 7.26 | 7.23 | 1.5 | 0.9 | 16.1 |
8 | 9 | 13 | 7.18 | 7.18 | 7.24 | 11.2 | 14 | 10.8 |
9 | 17 | 17 | 7.45 | 7.44 | 7.44 | -1 | 10 | 5 |
10 | 15 | 17 | 7.15 | 7.23 | 7.2 | 4.6 | 10.5 | 13.2 |
11 | 11 | 15 | 7.45 | 7.42 | 7.29 | -4.7 | 5 | 8.9 |
12 | 13 | 15 | 7.50 | 7.43 | 7.46 | -0.3 | 8 | -3.6 |
13 | 13 | 13 | 7.27 | 7.46 | 7.46 | -3.5 | 1 | 7.3 |
14 | 5 | 9 | 7.36 | 7.36 | 7.27 | 3.4 | 3.8 | 7.4 |
15 | 7 | 9 | 7.38 | 7.37 | 7.37 | 2.1 | 13 | 16 |
16 | 5 | 13 | 7.14 | 7.14 | 7.08 | 7 | -3.8 | -2.6 |
17 | 9 | 9 | 7.15 | 7.46 | 7.46 | 26.6 | 0.5 | -1 |