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Table 2 Weaning parameters

From: Use of diaphragm thickening fraction combined with rapid shallow breathing index for predicting success of weaning from mechanical ventilator in medical patients

Parameters (mean ± SD)

All (n = 34)

Success (n = 25)

Failure (n = 9)

p value

RSBI

52.6 ± 21.0

54.3 ± 22.8

47.7 ± 14.8

0.430

RSBI ≤ 105 (%)

29 (85.3)

24 (96.0)

5 (55.6)

0.012a

MIP (cmH2O)

− 32.2 ± 7.5

− 33.8 ± 7.4

− 27.8 ± 6.2

0.037a

MEP (cmH2O)

37.8 ± 14.8

38.4 ± 15.2

36.1 ± 14.5

0.698

Right diaphragm thickness at TLC (mm)

3.4 ± 1.3

3.5 ± 1.3

3.1 ± 1.3

0.450

Right diaphragm thickness at RV (mm)

2.4 ± 0.9

2.2 ± 0.9

2.5 ± 1.1

0.433

Right DTF (%)

48.5 ± 24.3

57.7 ± 21.2

22.9 ± 9.2

< 0.001a

Left DTF (%)

61.9 ± 38.1

68.8 ± 41.2

42.8 ± 18.5

0.017a

  1. RSBI rapid shallow breathing index, SD standard deviation, MIP maximum inspiratory pressure, MEP maximum expiratory pressure, TLC total lung capacity, RV residual volume, DTF diaphragm thickening fraction
  2. aStatistically significant