Tolerability of Nasal Delivery of Humidified and Warmed Air at Different Temperatures: A Randomised Double-Blind Pilot Study
Table 2
Tolerability Questionnaire results.
Individual question results
Median (minimum to maximum)
General comfort
Nasal interface weight
Noise
Nasal passage comfort
Ease of breathing through nose
NHF 37C
NHF 41C
NHF 37C
NHF 41C
NHF 37C
NHF 41C
NHF 37C
NHF 41C
NHF 37C
NHF 41C
2.5 (1 to 3)
3.0 (1 to 4)
1.5 (1 to 3)
2.0 (1 to 3)
2.0 (1 to 3)
3.0 (2 to 4)
2.0 (1 to 3)
2.0 (1 to 3)
2.5 (1 to 4)
3.0 (1 to 4)
Difference in proportion that scored 3 or above (95% CI), NHF 41C minus NHF 37C
General comfort
Nasal interface weight
Noise
Nasal passage comfort
Ease of breathing through nose
30% (1.6 to 58.4)
0% (−39.2 to 39.2)
20% (−4.8 to 44.8)
20% (−4.8 to 44.8)
20% (−4.8 to 44.8)
Free text comments#
Intervention
Difficulty in breathing through the nose
Damp/dripping nose
Noise of machine
Decreased mobility
Sneezing
NHF 37C
5
5
1
2
0
NHF 41C
9
5
4
3
2
. On a five-point Likert scale, values close to one are favourable and values close to five are less favourable; values by McNemar’s exact test, confidence intervals by asymptotic method. The same participant could be counted twice if they made the same comment for each intervention.
