. 2021 Feb 12;3(2):e0337. doi: 10.1097/CCE.0000000000000337

TABLE 2.

Changes in Respiratory Rate, Paco₂, and pH After 1 Hour of High-Velocity Nasal Insufflation According to the Result of the Therapy

Variable	Success			Failure
Variable	Baseline	1 hr HVNI	p	Baseline	1 hr HVNI	p
Respiratory rate (breaths/min)^a	29 (28–31)	22 (20–24)	< 0.001	30 (25–31)	23 (22–29)	0.379
Paco₂ (mm Hg)^a	56 (51–67)	51 (44–59)	< 0.001	66 (56–77)	72 (68–78)	0.392
pH^a^,^b	7.32 (7.28–7.34)	7.37 (7.34–7.40)^b	0.006	7.31 (7.29–7.32)	7.31 (7.28–7.35)^b	0.56

HVNI = high-velocity nasal insufflation.

^aValues expressed as median (interquartile range).

^bp = 0.022 for pH at the time of HVNI therapy (Mann-Whitney U test).