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Table 3 Deventilation syndrome

From: Characteristics of the deventilation syndrome in COPD patients treated with non-invasive ventilation: an explorative study

 

Baseline (afternoon)

After mask removal

After 2 h

After 4 h

p*

Patients with deventilation syndrome (n = 11)

     

 Borg Scale

3.9 (2.7)

7.18 (0.98)

4.82 (2.64)

4.00 (2.19)

0.003

 pCO2(mmHg)

47.0 (9.7)

47.42 (5.60)

 

46.71 (7.92)

0.492

 6MWT walking distance (m)

149.9 (112.4)

109.00 (111.45)

 

163.09 (130.75)

0.007

 VCmax (%)

51 (16.9)

46.00 (16.08)

54.86 (14.65)

54.55 (14.56)

 < 0.1

 Inspiratory flow (ml)

68.2 (16.6)

59.00 (19.12)

66.50 (13.55)

69.50 (12.13)

0.067

Patients without deventilation syndrome (n = 20)

     

 Borg Scale

2.1 (1.9)

1.9 (1.64)

2.10 (1.58)

2.05 (1.64)

0.330

 pCO2(mmHg)

46.7 (7.0)

49.05 (6.85)

 

49.58 (6.70)

0.510

 6MWT walking distance (m)

236.7 (112.8)

238.95 (110.33)

 

238.45 (110.36)

0.789

 VCmax (%)

67 (12.2)

61.70 (10.04)

65.25 (12.98)

66.65 (11.17)

0.079

 Inspiratory flow (ml)

72.0 (12.8)

68.25 (12.49)

69.75 (12.92)

71.00 (12.90)

0.316

  1. Bold values denote statistical significance
  2. Data are mean (SD)
  3. pCO2 capillary carbon dioxide pressure, 6MWT 6-min walking test, VCmax maximum vital capacity
  4. *If available, values after mask removal were compared to measurement after 2 h otherwise to measurement after 4 h