Table 2.
Vital signs, arterial blood gas and laboratory findings before weaning
| Variable | Weaning failure (n = 54) |
Weaning success (n = 207) |
P |
|---|---|---|---|
| Vital signs | |||
| RR, breaths/min | 21.4 ± 4.49 | 19.7 ± 4.75 | 0.020 |
| SpO2, % | 98(96–100) | 99(98–100) | 0.003 |
| HR, beats/min | 92(79–101) | 86(77–97) | 0.089 |
| SPB, mmHg | 124(112–131) | 131(118–144) | 0.011 |
| Arterial blood gas | |||
| PH | 7.45(7.43–7.47) | 7.45(7.45–7.48) | 0.914 |
| PaCO2, mmHg | 41.65(35.52–52.25) | 38(34–44) | 0.012 |
| PaO2, mmHg | 85.25(77.3–101.5) | 99(81–129) | 0.008 |
| PaO2/FiO2, mmHg | 259(212.46–314.25) | 302(234–383) | 0.003 |
| Laboratory findings | |||
| Leukocyte count, × 10.9/L | 10.15(8.13–14.45) | 8.9(6.7–12) | 0.023 |
| Platelet count, × 10.9/L | 154(112–234) | 184(135–253) | 0.031 |
| MPV, fl | 11.6(10.48–12.88) | 10.2(9.5–10.9) | 0.000 |
| PDW, % | 12(10.98–14.9) | 12.1(10.5–13.6) | 0.138 |
| Platelet large cell ratio, % | 29.8(24.68–38.18) | 28.2(21.6–33.5) | 0.056 |
| CRP, mg/L | 71(33–99) | 44(16–86) | 0.004 |
Continuous variables were presented as median and interquartile range (IQR) or (mean ± standard deviation, SD). Difference of RR was compared by Student’s t test. Difference of other variables were compared by Mann–Whitney U-test
Abbreviation: RR Respiratory Rate, HR Heart Rate, SBP Systolic Blood Pressure, SPO2 Peripheral Oxygen saturation, PaCO2 arterial Carbon dioxide tension, PaO2, arterial Oxygen tension, FiO2 Fraction of inspired Oxygen, MPV Mean Platelet Volume, PDW Platelet Distribution Width, CRP C-reactive Protein