Table 2.
Baseline oxygen saturation and arterial blood gas data, intravenous anesthetic agents, and intubation parameters.
| HFNO n = 40 |
FMO n = 40 |
p | |||
|---|---|---|---|---|---|
| SpO2 in room air, % | 97 | 96–98 (95–100) |
97 | 96–98 (93–99) |
0.8244 |
| PaO2 in room air, mm Hg | 90 | 81–97 (65–133) |
84 | 76–93 (61–181) |
0.1104 |
| PaCO2 in room air, mm Hg | 39.1 | 37.3–42.1 (30.1–49.6) |
41.6 | 38.1–43.9 (33.4–55.2) |
0.0604 |
| Intravenous anesthetics | |||||
| Lidocaine, mg | 80 | 80–100 (60–100) |
80 | 80–100 (60–100) |
0.6614 |
| Dexamethasone, mg | 5 | 5–5 (5–5) |
5 | 5–5 (5–5) |
>0.9999 |
| Glycopyrrolate, mg | 0.2 | 0.2–0.2 (0.2–0.2) |
0.2 | 0.2–0.2 (0.2–0.2) |
>0.9999 |
| Fentanyl, μg | 200 | 150–200 (150–250) |
200 | 150–200 (100–250) |
0.2038 |
| Propofol, mg | 200 | 150–200 (120–200) |
200 | 150–200 (130–200) |
0.7685 |
| Rocuronium, mg | 98 | 83–125 (60–200) |
98 | 90–100 (60–160) |
0.8428 |
| First-attempt success of intubation | 40 | 100.0 | 38 | 95.0 | 0.4937 |
| Time to successful intubation, s | 23 | 18–31 (11–62) |
24 | 19–34 (12–130) |
0.5470 |
| Need to use a video laryngoscope | 0 | 0 | 0 | 0 | NA |
Values are median (interquartile range; minimum and maximum). Abbreviations: FMO, facemask oxygenation; HFNO, high-flow nasal oxygenation; NA, not applicable; PaO2, partial pressure of arterial oxygen; PaCO2, partial pressure of arterial carbon dioxide; SpO2, peripheral capillary oxygen saturation.