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Table 1 Pulmonary function testing

From: Orthopnea secondary to brachial plexitis with bilateral diaphragmatic paralysis

 

Sitting

 

Supine

 

Actual

Predicted

% Predicted

Lower Limit Normal

Actual

% Predicted

% Change

FVC (L)

3.06

4.93

61

3.86

1.11

22

-63

FEV1 (L)

2.22

3.89

57

3.04

0.59

15

-73

FEV1/FVC (%)

72.69

79.15

91

68.23

52.72

66

-27

FEF 25–75% (L/sec)

1.51

3.55

42

1.91

0.19

5

-87

FEF Max (L/sec)

6.88

9.76

70

7.45

1.87

19

-72

MIP (cmH2O)

-41

-123

33

 

MEP (cmH2O)

135

233

57

 
  1. FVC: Forced vital capacity; FEV1: Forced expiratory volume in 1 s; FEF: Forced expiratory flow; MIP: Maximal inspiratory pressure; MEP: Maximal expiratory pressure. FVC and FEV1 values marked in bold to highlight the significant change sitting vs. supine.