Table 2. Device Characteristics.
|
Outcomes |
Group 1, n = 40 |
Group , n = 40 |
Relative risk, (95% CI) |
P value |
|
|
Primary outcome | |||||
|
First attempt successful ETI |
13/40 (32.5%) |
22/40 (55%) |
0.66 (0.44 to 0.99) |
0.042† |
|
|
Categorical secondary outcomes | |||||
|
Overall success rate of ETI |
22/40 (55%) |
31/40 (77.5%) |
0.67 (0.48 to 0.95) |
0.03† |
|
|
Successful SAD insertion |
40/40 (100%) |
39/40 (97.5%) |
- |
- |
|
|
Good glottic visualisation (Grade 2-4) |
25/40 (62.5%) |
33/39 (84.6%) |
0.73 (0.56 to 0.97) |
0.026† |
|
|
Successful ETI with maneuvers |
8/40 (20%) |
9/39 (23%) |
0.86 (0.37 to 2.01) |
0.785† |
|
|
First attempt success with SAD sizes (1.5/2/2.5) |
18%/50%/ - |
67%/52%/60% |
- |
- |
|
|
Continuous secondary outcomes |
Difference in means (95% CI) |
- |
|||
|
Time for SAD insertion (seconds) |
24 ±7 (n=40) |
23±9 (n = 39) |
0.77 (-2.84 to 4.38) |
0.672§ |
|
|
OLP (cm of H2O) |
15.2±5.58 (n = 40) |
25.74±7.05 (n = 39) |
-10.5 (-13.4 to -7.7) |
0.001§ |
|
|
- |
Difference in medians (95% CI) |
- |
|||
|
Time for SAD removal (seconds) |
27 (22-32) n = 21 |
24 (21-36) n = 31 |
2 (-3 to 6) |
0.484‡ |
|
|
Time for successful ETI (seconds) |
60 (53-60) n = 21 |
50 (39-60) n = 31 |
5 (0 to 11) |
0.019‡ |
|
|
Tidal volume leak in percentage |
4 (0-6) n = 40 |
0 (0-0) n = 39 |
- |
0.118‡ |
|
Values are presented as mean ± SD; median (IQR). P < 0.05 = Significant; †:chi square test, §: Independent sample t-test, ‡: Mann-whitney U test
CI, Confidence interval; OLP, oropharyngeal leak pressure; FOB, fiberoptic bronchoscopy; ETI, endotracheal intubation; SAD, supraglottic airway device; IQR, interquartile range; SD, standard deviation