Table 1

Baseline characteristics on HFNC-treated patients and controls

HFNC
(n=31)
Controls
(n=43)
P value
Sex (% female)68700.90
Age (years)67 ()68 ()0.88
Active smokers, %13140.80
BMI26.6 (8.8)26.0 (6.2)0.51
mMRC Score*3.2 (0.9)3.7 (0.9)0.04
Exacerbations 12 months before baseline, n2.8 (1.9)2.6 (1.7)0.42
PaO2, kPa (on LTOT)9.8 (1.5)10.0 (1.6)0.38
Oxygen saturation (%)95 (2.2)95 (2.5)0.57
pH7.39 (0.03)7.40 (0.03)0.76
Standard bicarbonate (mmol/L)30.1 (2.6)30.3 (2.3)0.51
Base excess7.5 (3.6)7.4 (2.7)0.81
PaCO2, kPa (on LTOT)7.3 (1.2)7.2 (0.6)0.45
FEV1%24.5 (8.8)26.1 (6.2)0.18
  • Mean (SD) unless otherwise indicated.

  • BMI, body mass index; FEV1%, forced expiratory volume in the first second, as percentage of expected value; kPa, kilo Pascal; LTOT, long-term oxygen therapy; mMRC, modified Medical Research Council Score; PaCO2, Partial arterial pressure of carbon dioxide; PaO2, Partial arterial pressure of oxygen.