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Table 7 The actual measured flow rate of devices

From: Factors influencing nasal airway pressure and comfort in high-flow nasal cannula oxygen therapy: a volunteer study

Pre-set flow rate(L/min)

HFT-300

H-80 M

Difference in actual output flow rate

10

8.69 ± 0.49

11.21 ± 0.78*

2.53 ± 0.85

20

18.06 ± 1.49

21.65 ± 0.65*

4.03 ± 1.24

30

26.47 ± 0.77

32.52 ± 0.59*

6.23 ± 0.51

40

35.26 ± 2.18

43.85 ± 2.08*

9.26 ± 1.85

50

43.99 ± 2.22

53.10 ± 1.31*

9.10 ± 2.43

60

51.68 ± 0.99

62.71 ± 1.49*

11.07 ± 1.84

  1. Value is the mean ± SD, * represents P < 0.01 compared to HFT-300, output flow difference = output flow (H-80 M) - output flow (HFT-300)
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BMC Pulmonary Medicine

ISSN: 1471-2466

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