Development of pulmonary parameters after surgery for the three patient groups
| Before surgery | 24 h after surgery | At extubation | p-value | |
| Thoracic surgery | ||||
| Cresp mL·cmH2O−1·kg−1 | 0.46±0.16 | 0.42±0.14 | 0.46±0.12 | 0.541 |
| FRC mL·kg−1 | 16.38±4.0 | 13.89±3.9* | 19.04±6.0* | 0.001 |
| LCI | 9.25±2.25 | 10.42±1.79* | 8.67±2.02 | 0.001 |
| M1/M0 | 2.21±0.48 | 2.46±0.42* | 2.07±0.5 | 0.003 |
| M2/M0 | 10.61±4.87 | 12.68±4.36* | 9.06±4.86 | 0.004 |
| AMDN1 | 1.24±0.3 | 1.3±0.36 | 1.17±0.21 | 0.341 |
| AMDN2 | 3.46±2.07 | 3.85±2.82 | 2.84±1.02 | 0.325 |
| Abdominal surgery | ||||
| Cresp mL·cmH2O−1·kg−1 | 0.46±0.14 | 0.37±0.08 | 0.55±0.16** | 0.001 |
| FRC mL·kg−1 | 17.12±3.9 | 12.66±4.3* | 18.88±4.0 | 0.001 |
| LCI | 9.7±1.3 | 10.57±2.31 | 9.07±0.97 | 0.177 |
| M1/M0 | 2.32±0.32 | 2.46±0.41 | 2.21±0.23 | 0.287 |
| M2/M0 | 10.87±2.58 | 12.51±4.85 | 9.95±1.97 | 0.285 |
| AMDN1 | 1.17±0.26 | 1.28±0.49 | 1.21±0.19 | 0.578 |
| AMDN2 | 3.34±1.78 | 3.79±3.27 | 3.01±1.01 | 0.646 |
| Surgery of CDH | ||||
| Cresp mL·cmH2O−1·kg−1 | 0.25±0.10 | 0.26±0.09 | 0.29±0.09 | 0.221 |
| FRC mL·kg−1 | 8.99±2.07 | 11.5±2.92* | 13.7±3.61 ** | 0.001 |
| LCI | 11.2±1.21 | 9.78±0.77* | 9.24±1.08** | 0.005 |
| M1/M0 | 2.69±0.36 | 2.34±0.19* | 2.20±0.25** | 0.006 |
| M2/M0 | 14.6±3.65 | 11.1±1.88* | 9.91±2.09** | 0.005 |
| AMDN1 | 1.57±0.34 | 1.20±0.36* | 0.98±0.19** | 0.005 |
| AMDN2 | 5.20±2.28 | 3.06±1.93 | 2.09±0.91 | 0.009 |
Data are presented as group mean±sd, unless otherwise indicated. CDH: congenital diaphragmatic hernia; Cresp: respiratory compliance; FRC: functional residual capacity; LCI: lung clearance index; M1/M0: first-to-zeroth moment ratio; M2/M0: second-to-zeroth moment ratio; AMDN1 and AMDN2: alveolar mean dilution numbers 1 and 2, respectively. *: p<0.05; **: p<0.01, when compared with measurements before surgery. Statistically significant values after Bonferroni correction are indicated in bold.