Respiratory mechanicsa | Statistical analysisb | ||||||
---|---|---|---|---|---|---|---|
PEEP (cmH2O) | Middle balloon position | Low balloon position | Â | Coef. | 95Â % CI | p | |
ElastanceRS cmH2O/L |  |  | PEEP 10 versus 0 | −0.06 | −0.75 | 0.62 | 0.857 |
0 | 18.8 ± 5.1 | 18.3 ± 4.9 | Low versus middle position | −0.57 | −1.26 | 0.11 | 0.103 |
10 | 18.8 ± 5.1 | 18.5 ± 5.1 | Low position × PEEP 10 | 0.29 | −0.68 | 1.26 | 0.559 |
ElastanceL cmH2O/L | Â | Â | Â | Â | Â | ||
0 | 12.5 ± 5.1 | 11.6 ± 4.7 | PEEP 10 versus 0 | 0.64 | −0.26 | 1.55 | 0.164 |
10 | 13.2 ± 4.1 | 13.3 ± 4.2 | Low versus middle position | −0.99 | −1.90 | −0.08 | 0.033 |
 |  |  | Low position × PEEP 10 | 1.13 | −0.15 | 2.42 | 0.083 |
ElastanceCW cmH2O/L | Â | Â | Â | Â | Â | ||
0 | 6.3 ± 3.4 | 6.7 ± 4.2 | PEEP 10 versus 0 | −0.71 | −1.39 | −0.02 | 0.044 |
10 | 5.6 ± 2.7 | 5.2 ± 3.0 | Low versus middle position | 0.42 | −0.27 | 1.11 | 0.231 |
 |  |  | Low position × PEEP 10 | −0.85 | −1.81 | 0.12 | 0.088 |
El–End–Insp Tp cmH2O |  |  |  |  |  | ||
0 | 6.3 ± 2.6 | 5.7 ± 2.2 | PEEP 10 versus 0 | 8.23 | 7.76 | 8.70 | <0.001 |
10 | 14.6 ± 2.7 | 13.5 ± 2.5 | Low versus middle position | −0.61 | −1.09 | −0.14 | 0.011 |
 |  |  | Low position × PEEP 10 | −0.50 | −1.17 | 0.17 | 0.142 |