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Table 4 Comparison of arterial blood gas analysis in protocol A

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

 

VM

HFNC

mean diffference

95%CI

p value

PFR (mmHg)

243.7

(62.5)

272.0

(88.6)

−28.3

− 53.8

to

− 2.9

0.031

PO2 (mmHg)

90.7

(18.8)

101.0

(27.4)

−10.3

−19.7

to

−0.9

0.034

PCO2 (mmHg)

34.6

(3.0)

32.4

(3.6)

2.1

0.9

to

3.3

0.002

HCO3− (mEq/L)

22.7

(2.3)

22.1

(2.6)

0.5

−0.2

to

1.2

0.129

pH

7.44

(0.03)

7.45

(0.03)

−0.01

−0.03

to

−0.00

0.003

  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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