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Table 2 Pulmonary function and maximal ventilatory pressures before and after bariatric surgery

From: Obstructive sleep apnea and pulmonary function in patients with severe obesity before and after bariatric surgery: a randomized clinical trial

Variables (n = 16)

Control (n = 36)

Pre surgery

After surgery (n = 16)

p

    

(after vs. pre)

FVC (L)

3,06 ± 0,47

2,96 ± 0,63

3,33 ± 0,80

0,002**

FVC (% of pred.)

102 ± 21,46

97,75 ± 18,65

110,50 ± 16,95

0,016**

FEV1 (L)

2,45 ± 0,34

2,38 ± 0,52

2,71 ± 0,72

0,003**

FEV1 (%)

97,57 ± 20,92

91,92 ± 21,24

107,00 ± 20,23

0,022**

FEV1/FVC (L)

0,79 ± 0,08

0,80 ± 0,07

0,81 ± 0,07

ns

FEV1/FVC (% of pred.)

79,43 ± 8,06

80,08 ± 7,28

81,50 ± 7,44

ns

MIP (cmH2O)

    

  Female

53,61 ± 17,63

52,67 ± 18,91

83,75 ± 10,78

0,002*

  Male

62,31 ± 21,32

61,18 ± 23,11

87,54 ± 9,83

0,004*

MEP (cmH2O)

    

  Female

52,37 ± 15,69

53,58 ± 16,88

80,50 ± 13,31

0,001*

  Male

62,31 ± 17,25

60,65 ± 18,36

84,96 ± 7,86

0,002*

  1. FEV1, Forced expiratory volume in the first second; FVC, Forced vital capacity; MEP, Maximal expiratory pressure; MIP, Maximal inspiratory pressure; * p derived by paired Student’s t test; ** p derived by Wilcoxon Test.