Skip to main content
. 2019 Jul 5;87(1):62–68. doi: 10.1038/s41390-019-0494-5

Table 2.

Pattern features during NCPAP and HFNC

NCPAP HFNC Paired difference (HFNC – NCPAP) p Value (paired)
Pause
 DPAU (unitless) 0.02 [0.01, 0.05] 0.03 [0.02, 0.07] 0.003 [−0.007, 0.03] 0.2
 FPAU (#/min) 0.3 [0.2, 0.7] 0.5 [0.2, 0.8] 0.06 [−0.1, 0.3] 0.2
 TPAUMAX (s) 7.3 [4.6, 9.3] 9.2 [5.0, 11.5] 1.3 [−0.9, 7.6] 0.04*
Asynchronous breathing
 DASB 0.08 [0.04, 0.2] 0.1 [0.06, 0.4] 0.008 [−0.02, 0.05] 0.3
 FASB 1.2 [0.6, 2.3] 1.5 [0.8, 2.9] 0.2 [−0.4, 0.7] 0.2
 TASBMAX 13.8 [6.9, 33.4] 18.4 [6.5, 50.8] −0.1 [−3.6, 6.2] 1.0
Synchronous breathing
 DSYB 0.5 [0.2, 0.6] 0.4 [0.2, 0.6] −0.03 [−0.08, 0.09] 0.7
 FSYB 2.8 [2.0, 3.4] 2.6 [1.4, 3.4] −0.1 [−0.6, 0.4] 0.2
 TSYBMAX 49.4 [24.6, 78.7] 55.6 [22.9, 87.1] 0.1 [−28.9, 33.2] 0.8
Movement artifact
 DMVT 0.1 [0.07, 0.2] 0.1 [0.07, 0.2] 0.01 [−0.04, 0.05] 0.8
 FMVT 1.6 [1.0, 2.1] 1.7 [1.0, 2.1] −0.02 [−0.4, 0.6] 0.7
 TMVTMAX 11.6 [8.3, 14.8] 10.2 [8.6, 13.6] −1.1 [−4.4, 4.7] 0.5
Pause with desaturation
 DPAU + DST 0.001 [0, 0.02] 0.007 [0, 0.03] 0 [−8.3e − 4, 0.01] 0.2
 FPAU + DST 0.03 [0, 0.2] 0.1 [0, 0.4] 0 [−0.005, 0.2] 0.1
 T(PAU + DST)MAX 1.4 [0, 7.0] 4.1 [0, 8.8] 0.06 [0, 2.3] 0.09
Pause with radycardia
 DPAU + BDY 0.008 [0.003, 0.02] 0.01 [0.003, 0.02] 0.003 [−0.006, 0.009] 0.4
 FPAU + BDY 0.1 [0.06, 0.3] 0.1 [0.1, 0.3] 0.03 [−0.1, 0.1] 0.5
 T(PAU + BDY)MAX 4.8 [3.2, 8.6] 4.5 [3.2, 10.9] 1.0 [−2.1, 3.2] 0.3

Values are expressed as median [IQR]

NCPAP nasal continuous positive airway pressure, HFNC high flow nasal cannula, D density of a pattern during the entire recording, F frequency of occurrence, TMAX maximum event length

*p < 0.05