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Table 5 Baseline average arterial and transcutaneous blood gas values

From: The prevalence of non-invasive ventilation and long-term oxygen treatment in Helsinki University Hospital area, Finland

Mean ± SD All patients NIV initiation
(N = 363)
All patients LTOT initiation
(N = 335)
All patients NIV + LTOT initiation
(N = 117)
COPD patients
NIV initiation
(N = 46)
COPD patients
LTOT initiation
(N = 169)
COPD patients
NIV + LTOT initiation
(N = 56)
OHS patients NIV initiation
(N = 214)
ABG PaO2 (kPa) 8.7 ± 2.3 7.2 ± 1.1 7.4 ± 1.8 7.7 ± 1.5 7.2 ± 1.0 7.0 ± 1.3 8.2 ± 2.0
ABG PaCO2 (kPa) 7.9 ± 2.6 5.3 ± 1.1 7.9 ± 2.8 8.4 ± 2.5 5.4 ± 1.2 7.4 ± 1.8 8.0 ± 2.4
SpO2% 86.6 ± 10.2 86.2 ± 5.7 83.3 ± 13.2 86.2 ± 4.6 85.9 ± 4.4 80.8 ± 20.2 83.3 ± 11.2
PtcCO2 (kPa) 7.1 ± 1.1 5.0 ± 1.1 7.1 ± 1.2 7.2 ± 0.7 5.1 ± 0.7 7.0 ± 1.1 7.3 ± 1.0
  1. NIV, non-invasive ventilation; LTOT, long-term oxygen treatment; COPD, chronic obstructive pulmonary disease; ABG, arterial blood gas test; PaO2, partial pressure of arterial blood oxygen; PaCO2, partial pressure of arterial blood carbon dioxide; kPa, kilopascal; SpO2, oxygen saturation; PtcCO2, transcutaneous partial pressure of carbon dioxide