Table 2 Blood gases values and vital signs in HFNC and VM

PaO₂/FiO₂ (mmHg)

127 (100–147)

118 (107–152)

0.604

PaO₂ (mmHg)

59.0 (55.0–64.8)

60.0 (50.2–70.0)

0.906

P (A-a) O₂ (mmHg)

236 (196–266)

242 (203–264)

0.122

FiO₂

0.50 (0.45–0.50)

0.50 (0.40–0.50)

0.180

SaO₂ (%)

91.10 (88.40–93.40)

92.10 (87.00–94.20)

0.688

PaCO₂ (mmHg)

39.20 (34.70–42.10)

36.60 (32.00–40.90)

0.001

pH

7.49 (7.46–7.51)

7.50 (7.47–7.52)

0.323

RR (breaths/min)

21 (17–25)

23 (20–28)

0.013

MAP (mmHg)

90 (87–93)

90 (87–95)

0.311

HR (beats/min)

75 (60–85)

80 (64–90)

0.189