| Non-invasive ventilation (n = 40) | High-flow nasal cannula oxygen (n = 51) | P value |
---|---|---|---|
Outcomes | |||
 SpO2 < 80% during intubation procedure, n (%) | 15 (37) | 16 (31) | 0.54 |
 Lowest SpO2 during intubation procedure, median (IQR) | 87 (77–93) | 86 (78–92) | 0.98 |
 SpO2 at the beginning of preoxygenation, %, median (IQR) | 94 (92–99) | 96 (93–99) | 0.25 |
 SpO2 at the end of preoxygenation, %, median (IQR) | 99 (98–100) | 99 (96–100) | 0.26 |
Procedure of tracheal intubation, n (%) | |||
 Duration of laryngoscopy, n (%) | 0.98 | ||
  < 1 min | 24 (62) | 31 (61) |  |
  1 to 3 min | 10 (26) | 14 (27) |  |
  > 3 min | 5 (13) | 6 (12) |  |
 Number of laryngoscopy attempt | 0.90 | ||
  One | 30 (75) | 38 (79) |  |
  Two | 8 (20) | 8 (17) |  |
  Three or more, or > 10 min | 2 (5) | 2 (4) |  |
 First junior operator | 10 (25) | 12 (24) | 0.87 |
 Intervention of another skilled operator | 14 (35) | 12 (23) | 0.23 |
 Use of alternative management devices | 7 | 8 | 0.81 |
  Introducer | 6 (15) | 8 (16) |  |
  Other | 1 (3) | 0 |  |
 Intubation Difficulty Scale,a n (%) | 0.35 | ||
  ≤ 5 | 30 (81) | 45 (88) |  |
  > 5 | 7 (19) | 6 (12) |  |