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Table 6 Comparison of arterial blood gas analysis in protocol B

From: The short-term efficacy of high flow nasal oxygen therapy on cardiovascular surgical patients: a randomized crossover trial

 

HFNC

VM

mean difference

95%CI

p value

PFR (mmHg)

260.2

(76.2)

234.0

(75.3)

26.2

1.3

to

51.1

0.041

PO2 (mmHg)

102.3

(25.1)

92.8

(26.9)

9.5

−0.1

to

19.1

0.052

PCO2 (mmHg)

35.0

(3.0)

34.9

(2.9)

0.1

−1.0

to

1.3

0.791

HCO3− (mEq/L)

23.1

(2.0)

23.1

(1.5)

0.0

−0.7

to

0.7

0.935

pH

7.43

(0.04)

7.44

(0.03)

−0.01

−0.02

to

0.00

0.254

  1. HFNC High flow nasal cannula, VM Venture mask, CI Confidence interval, PFR PaO2/FiO2 ratio
  2. Data are presented as mean (standard deviation)
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