TABLE 2.
Comparison of the parameters before weaning between the failure group and success group.
| Parameters | Weaning failure group (n = 16) |
Weaning success group (n = 56) |
p-Values |
| General information | |||
| Gender (male/female, n) | 14/2 | 50/6 | 0.84 |
| Age (months) | 22.8 ± 6.8 | 23.7 ± 6.2 | 0.60 |
| PRISM 3 score on PICU admission | 10.0 (6.0, 13.5) | 8.0 (4.0, 11.0) | 0.14 |
| Clinical characteristics | |||
| pH | 7.40 ± 0.08 | 7.41 ± 0.05 | 0.40 |
| PaCO2 (mmHg) | 42.5 ± 9.4 | 39.9 ± 4.9 | 0.30 |
| PaO2 (mmHg) | 91.8 ± 4.0 | 93.7 ± 3.6 | 0.07 |
| Days of mechanical ventilation | |||
| [d, M (P25, P75)] | 9 (4, 14) | 6 (5, 8) | 0.05 |
| Days of hospitalization | |||
| [d, M (P25, P75)] | 17 (14, 28) | 9 (7, 11) | 0.00 |
| Time interval of ultrasound and SBT (h) | 5.56 ± 2.25 | 5.46 ± 1.57 | 0.84 |
| Ultrasound results | |||
| Excursion (mm) | 6.93 ± 2.77 | 9.36 ± 3.34 | 0.01 |
| Speed (mm/s) | 13.3 ± 8.7 | 14.6 ± 4.6 | 0.56 |
| DteeR (mm) | 1.13 ± 0.26 | 1.24 ± 0.29 | 0.17 |
| DteiR (mm) | 1.30 ± 0.31 | 1.57 ± 0.43 | 0.02 |
| DTFR (%) | 15.9 ± 10.0 | 26.8 ± 16.7 | 0.02 |
| DteeL (mm) | 1.07 ± 0.27 | 1.20 ± 0.31 | 0.13 |
| DteiL (mm) | 1.22 ± 0.29 | 1.49 ± 0.40 | 0.02 |
| DTFL (%) | 15.0 ± 7.7 | 24.3 ± 13.8 | 0.00 |
| Dtee MIN (mm) | 0.97 ± 0.36 | 1.12 ± 0.24 | 0.05 |
| Dtee MAX (mm) | 1.11 ± 0.41 | 1.32 ± 0.31 | 0.03 |
| DteiMIN (mm) | 1.19 ± 0.29 | 1.40 ± 0.35 | 0.03 |
| DteiMAX (mm) | 1.30 ± 0.35 | 1.66 ± 0.45 | 0.00 |
| DTFMIN (%) | 10.0 ± 6.2 | 18.5 ± 9.6 | 0.00 |
| DTFMAX (%) | 18.3 ± 9.2 | 32.7 ± 17.4 | 0.00 |
Results are presented as median (IQR), ± SD, or number.
DteeR, right diaphragm thickness at the end of expiration; DteeL, left diaphragm thickness at the end of expiration; DteeMIN, minimum diaphragm thickness at the end of expiration; DteeMAX, maximum diaphragm thickness at the end of expiration; DteiR, right diaphragm thickness at the end of inspiration; DteiL, left diaphragm thickness at the end of inspiration; DteiMIN, minimum diaphragm thickness at the end of inspiration; DteiMAX, maximum diaphragm thickness at the end of inspiration; DTFR, right diaphragm thickening fraction; DTFL, left diaphragm thickening fraction; DTFMIN, minimum diaphragm thickening fraction; DTFMAX, maximum diaphragm thickening fraction; PICU, pediatric intensive care unit; SBT, spontaneous breathing trial.