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. 2023 Nov 20;23:449. doi: 10.1186/s12890-023-02752-6

Table 4.

EIP produced by different nasal cannulae in HFNC at different flow rates

Flow rate(L/min) EIP
5 mm 4 mm 3 mm
0 −0.82(0.48) −0.68(0.58) −0.66(0.35)
10 −0.58 (0.47) −0.61(0.58) − 0.43(0.56)#
20 −0.07(0.56) − 0.08(0.55) − 0.13(0.55)
30 0.19(0.63) 0.28(0.54) 0.22(0.80)
40 1.02(1.21) 0.96(0.79) 0.94(1.21)#
50 1.77(1.51)* 1.49(1.24)# 1.62(1.51)
60 2.88(1.89)* 2.27(1.41)# 2.26(1.56)#

Values are median (IQR), # represents P < 0.05 compared to 5 mm cannula at the same flow rate, * represents P < 0.05 compared to 4 mm cannula