Table 2 Comparison of mechanical ventilation, vital signs and laboratory parameters between patients with successful and failed weaning
Variable | weaning success(n = 278) | weaning failure(n = 45) | P |
|---|---|---|---|
RSBI(breaths/min/L) | 36.17(31.05–42.23) | 43.01(34.89–53.81) | 0.001 |
Vte(ml) | 470(425.75–488.5) | 436(380.5–475.0) | 0.033 |
RR(breaths/min) | 18(16–22) | 22(15.5–24.5) | 0.067 |
MV(L/min) | 7.99(6/687-8.363) | 8.28(6.420–9.22) | 0.256 |
h((beats/min) | 86.76 ± 15.41 | 89.76 ± 12.86 | 0.217 |
SBP(mmHg) | 135.10 ± 19.95 | 131.04 ± 18.69 | 0.203 |
SPO2 | 99(97–100) | 98(97–100) | 0.179 |
PH | 7.44(7.404–7.470) | 7.44(7.42–7.477) | 0.500 |
PaCO2(mmHg) | 36.7(32.9–41) | 36(31.75–40.85) | 0.432 |
PaO2(mmHg) | 108(86–138) | 100(80.6-115.5) | 0.044 |
PaO2/FIO2 | 312(246.31-397.23) | 276.67(231-354.76) | 0.071 |
HB(g/L) | 101(88.75-120.25) | 95(84.5-108.5) | 0.018 |
ALB(g/L) | 29.54 ± 4.56 | 26.84 ± 4.51 | 0.000 |
Creatinine(mmol/L) | 67.6(51.15–91.9) | 83.8(54.55-115.75) | 0.045 |
β2 microglobulin(mmol/L) | 2.97(2.32–3.95) | 3.47(2.73–6.19) | 0.007 |
NTproBNP1(pg/ml) | 651(281.65-1315.25) | 1221.5(404.5-3072.5) | 0.005 |
NTproBNP2(pg/ml) | 781.5(359.13-1504.75) | 1946(842.35-4334.35) | 0.000 |
ΔNT-proBNP% | 11.9(2.425–60.74) | 32.2(22.286–60.74) | 0.000 |
Long diameter of left atrium(mm) | 50(46–55) | 49(45–54) | 0.413 |
Transverse diameter of left atrium(mm) | 35(32–38) | 35(31.5–38) | 0.567 |
Long diameter of right atrium(mm) | 46(42–49) | 46(42.5–50) | 0.716 |
Transverse diameter of right atrium(mm) | 32(29–35) | 32(28–36) | 0.867 |
Transverse diameter of right ventricle(mm) | 30(28–32) | 30(27.5–33) | 0.658 |
Diameter of main pulmonary artery(mm) | 24(22–25) | 23(22–25) | 0.756 |
LVDS(mm) | 29(27–31) | 31(30–32) | 0.008 |
LVDD(mm) | 47(44–49) | 47(45–49) | 0.270 |
LVEF(%) | 67(63–71) | 65(62.5–68) | 0.007 |
Fluid balance during 24 h before SBT(ml) | 403(-99.38-894) | 642(18.5-1285.5) | 0.091 |