Table 4: SpO2 level reached according to the oxygenation device used. |
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SpO2 (%) |
BVM, n (%) |
Bain circuit, n (%) |
NIMV, n (%) |
p |
After pre-oxygenation |
||||
≤ 60 |
1 (2.0) |
0 (0.0) |
1 (6.3) |
|
61-70 |
2 (4.1) |
2 (4.5) |
0 (0.0) |
|
71-80 |
10 (20.4) |
8 (18.2) |
0 (0.0) |
0.473 |
81-90 |
15 (30.6) |
15 (34.1) |
5 (31.3) |
|
91-100 |
21 (42.9) |
19 (43.2) |
10 (62.5) |
|
Post induction |
||||
≤ 60 |
13 (26.5) |
10 (22.7) |
0 (0.0) |
|
61-70 |
8 (16.4) |
4 (9.1) |
2 (12.5) |
|
71-80 |
13 (26.5) |
17 (38.7) |
4 (25.0) |
0.105 |
81-90 |
15 (30.6) |
13 (29.5) |
10 (62.5) |
|
91-100 |
0 (0.0) |
0 (0.0) |
0 (0.0) |
|
SpO2 = oxygen saturation by pulseoximetry. B VM = bag-valve-mask. NIMV = non-invasive mechanical ventilator. |