Table 2

Arterial blood gas values and comfort scores at different settings

BaselineHFOT 20 (closed)HFOT 30 (closed)NIV
PaCO2 (mm Hg)61.2±9.257.2±11.755.7±10.655.2±11.9
PaO2 (mm Hg)70.6±12.670.3±17.361.5±11.183.3±33.2
Comfort score7 (5–8)5.5 (5–8)5.5 (2–8)5 (3–5)
  • Data are presented as mean±SD unless indicated otherwise.

  • Comfort score was assessed with a scale where 0 is the worst comfort and 10 the best. The data are presented as the median (interquartile 25–75).

  • HFOT, high flow oxygen therapy; NIV, non-invasive ventilation.