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Table 2 Characteristics of the noninvasive positive pressure ventilation (NPPV) and the conventional mechanical ventilation (CMV) groups according to nonmatching criteria

From: Early fiberoptic bronchoscopy during non-invasive ventilation in patients with decompensated chronic obstructive pulmonary disease due to community-acquired-pneumonia

 

NPPV (n = 15)

CMV (n = 15)

P

Age, years, mean (SD)

80 (5)

73 (5)

0.001

Male, n (%)

12 (80)

9 (60)

0.427

BMI, Kg/m2, mean (SD)

25 (4)

26 (3)

0.509

FEV1, % of pred., mean (SD)a

30 (5)

31 (5)

0.866

FVC, % of pred., mean (SD)a

39 (8)

42 (8)

0.262

PaO2, mmHg, mean (SD)a

51 (3)

54 (3)

0.105

PaCO2, mmHg, mean (SD)a

59 (5)

57 (4)

0.257

pH, mean (SD)a

7.39 (0.02)

7.40 (0.03)

0.514

Charlson score, median (IQR)

2 (1-2)

1 (1-1)

0.041

Exacerbations, median (IQR)b

1.7 (0.9)

1.1 (1.0)

0.600

Antibiotic use, n (%)c

5 (33.3)

6 (40.0)

0.705

DNR order, n (%)

2 (13.3)

0 (0.0)

0.483

Pre-MV hospital, days median (IQR)

1 (1-2)

1 (1-2)

0.646

RR, bpm, mean (SD)

34 (4)

36 (3)

0.160

HR, bpm, mean (SD)

102 (12)

108 (12)

0.224

PS, cmH2O, mean (SD)

18 (4)

17 (4)

0.445

  1. BMI, body mass index; DNR, do-not-resuscitate; FEV1, forced expiratory volume in the first second; FVC, forced vital capacity; HR, heart rate; IQR, interquartile range MV, mechanical ventilation; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; PS, pressure support; RR, respiratory rate; SD, standard deviation.
  2. a stable status within the previous 6 months.
  3. b within the previous 12 months.
  4. c within the previous 3 months.