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Table 4 Time course of arterial blood gases before, during and after fiberoptic bronchoscopy (FBO) in the noninvasive positive pressure ventilation (NPPV) group

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

 

pre-NPPV

pre-FBO

during FBO

post-FBOa

pH, mean (SD)

7.27 (0.02)

7.29 (0.02)

7.29 (0.02)

7.37 (0.04)**

PaCO2 mmHg, mean (SD)

76 (7)

75 (8)

73 (7)

60 (3)**

PaO2/FiO2, mean (SD)

163 (60)

211 (39)**

203 (40)*

200 (70)**

SpO2, %, mean (SD)

79 (9)

93 (2)**

92 (3)**

92 (2)**

FiO2, mean (SD)

0.45 (10)

0.70

1.0

0.39 (12)

  1. a after 2 hours of NPPV.
  2. * P < 0.05 vs pre-NPPV.
  3. ** P < 0.05 vs pre-NPPV.
  4. FiO2, fraction of inspired oxygen; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; SD, standard deviation; SpO2, pulse oximetry.
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Critical Care

ISSN: 1364-8535