Table 1 Clinical characteristics of the patients
Overall (n = 49) | LUS < 14 (n = 16) | LUS ≥ 14 (n = 33) | P value | |
|---|---|---|---|---|
LUS | 15 (11 to 21) | 10 (8 to 11) | 19 (15 to 22) | < 0.001 |
Age (year) | 55 (41 to 67) | 58 (43 to 71) | 52 (41 to 66) | 0.179 |
Sex (male) | 33 (67%) | 9 (56%) | 24 (72%) | 0.249 |
APACHE II at admission | 13 (8 to 16) | 15 (9 to 18) | 13 (7 to 15) | 0.375 |
SOFA at admission | 6 (4 to 8) | 5 (4 to 7) | 6 (4 to 9) | 0.390 |
Cause of admission (n) | 0.239 | |||
Medical | 26 (53%) | 8 (50%) | 18 (55%) | |
Surgical | 15 (31%) | 7 (44%) | 8 (24%) | |
Trauma | 8 (16%) | 1 (6%) | 7 (21%) | |
ET size (mm) | 7.5 (7.5 to 7.5) | 7.5 (7 to 7.5) | 7.5 (7.5 to 7.5) | 0.418 |
Frequency-T-1 (breaths/min) | 17 (15 to 21) | 16 (14 to 22) | 18 (15 to 21) | 0.571 |
Pressure support level T-1 (cmH2O) | 8 (8 to 10) | 8 (8 to 10) | 8 (8 to 9) | 0.834 |
PEEP T-1 (cmH2O) | 5 (5 to 6) | 5 (5 to 6) | 5 (5 to 6) | 0.927 |
VT T-1 (ml) | 495 (409 to 571) | 450 (418 to 591) | 514 (403 to 563) | 0.981 |
FiO2 (%) T-1 | 40 (35 to 40) | 40 (35 to 40) | 40 (34 to 45) | 0.237 |
PaO2/FiO2 T-1 (mmHg) | 244 (213 to 278 | 279 (236 to 339) | 238 (208 to 205) | 0.016 |
Duration of MV before SBT (day) | 10 (4 to 15) | 9 (3 to 12) | 10 (4 to 16) | 0.412 |
Total duration of MV (day) | 10 (5 to 17) | 9 (4 to 12) | 10 (6 to 18) | 0.197 |