Table 4 Risk factors for weaning failure

ΔNT-proBNP%

≤ 23.3%

reference

reference

> 23.3%

8.52

4.11–17.68

0.000

13.568

4.584–40.268

0.000

BNP1, pg/ml

≤ 2003

reference

reference

> 2003

4.478

2.265–8.853

0.000

4.239

0.653–27.534

0.13

BNP2, pg/ml

≤ 2610

reference

reference

> 2610

8.096

3.951–16.588

0.000

3.844

0.725–20.378

0.114

RBSI

≤ 36.398

reference

reference

> 36.398

4.677

2.34–9.308

0.000

3.481

1.362–8.897

0.009

MV, L/MIN

≤ 8.16

reference

reference

> 8.16

3.772

1.972–7.216

0.000

2.178

0.873–5.433

0.095