Table 1.
Skill performance at first, second and third evaluation
| First evaluation | Second evaluation | Third evaluation | Overall | |
|---|---|---|---|---|
|
Endotracheal intubation | ||||
| Hands-off time |
48.0 (43.0-53.0) |
32.9 (25.3-40.6)** |
37.4 (27.7-47.1)* |
39.4 (34.0-44.9) |
| Attempts |
2.2 (1.9-2.5) |
1.8 (1.5-2.0) |
1.8 (1.5-2.1) |
1.9 (1.8-2.1) |
| Successful |
14/40 (35%) |
23/40 (58%) |
28/40 (70%) |
65/120 (54%) |
| Unrecognised misplacement |
8/40 (20%) |
7/40 (18%) |
6/40 (15%) |
21/120 (18%) |
| Successful attempts within 10s |
1/40 (2.5%) |
6/40 (15%)* |
6/40 (15%)* |
13/120 (11%) |
|
Combitube | ||||
| Hands-off time |
10.0 (4.9-15.1) |
8.2 (6.5-9.9) |
6.0 (4.3-7.8)** |
7.9 (6.9-9.0) |
| Attempts |
1.3 (1.1-1.5) |
1.2 (1.1-1.4) |
1.0 (1.0-1.0) |
1.1 (1.1-1.2) |
| Successful |
39/39 (100%) |
39/39 (100%) |
40/40 (100%) |
118/118 (100%) |
| Unrecognised misplacement |
0/39 (0%) |
0/39 (0%) |
0/40 (0%) |
0/118 (0%) |
| Successful attempts within 10s |
29/39 (74.4%) |
30/39 (76.9%) |
37/40 (92.5%)* |
96/118 (81%) |
|
EasyTube | ||||
| Hands-off time |
11.4 (6.4-16.4) |
8.3 (5.3-11.4) |
6.7 (4.8-8.6)** |
8.8 (7.3-10.3) |
| Attempts |
1.3 (1.1-1.5) |
1.2 (1.1-1.4) |
1.1 (1.0-1.1) |
1.2 (1.1-1.3) |
| Successful |
40/40 (100%) |
39/39 (100%) |
40/40 (100%) |
119/119 (100%) |
| Unrecognised misplacement |
0/40 (0%) |
0/39 (0%) |
0/40 (0%) |
0/119 (0%) |
| Successful attempts within 10s |
27/40 (67.5%) |
33/39 (84.6%) |
34/40 (85%) |
94/119 (79%) |
|
I-Gel | ||||
| Hands-off time |
15.9 (10.8-20.9) |
12.0 (9.6-14.4) |
7.9 (6.2-9.6)** |
11.9 (10.2-13.7) |
| Attempts |
1.9 (1.6-2.2) |
1.6 (1.4-1.9) |
1.3 (1.1-1.5) |
1.6 (1.5-1.8) |
| Successful |
40/40 (100%) |
39/40 (98%) |
40/40 (100%) |
119/120 (99%) |
| Unrecognised misplacement |
0/40 (0%) |
0/40 (0%) |
0/40 (0%) |
0/120 (0%) |
| Successful attempts within 10s |
16/40 (40%) |
18/40 (45%) |
27/40 (67.5%)** |
61/120 (51%) |
|
LMA | ||||
| Hands-off time |
13.3 (8.2-18.3) |
10.3 (7.7-13.0) |
6.8 (5.4-8.3)** |
10.2 (8.6-11.7) |
| Attempts |
1.6 (1.3-1.8) |
1.4 (1.2-1.6) |
1.3 (1.1-1.4) |
1.4 (1.3-1.5) |
| Successful |
40/40 (100%) |
40/40 (100%) |
40/40 (100%) |
120/120 (100%) |
| Unrecognised misplacement |
0/40 (0%) |
1/40 (3%) |
0/40 (0%) |
1/120 (1%) |
| Successful attempts within 10s |
21/40 (52.5%) |
24/40 (60%) |
33/40 (82.5%)** |
78/120 (65%) |
|
Laryngeal tube | ||||
| Hands-off time |
8.4 (3.4-16.4) |
5.2 (4.2-6.3)** |
4.5 (3.7-5.3)** |
6.1 (5.2-6.9) |
| Attempts |
1.4 (1.2-1.6) |
1.2 (1.0-1.3) |
1.1 (1.0-1.1) |
1.2 (1.1-1.3) |
| Successful |
40/40 (100%) |
40/40 (100%) |
40/40 (100%) |
120/120 (100%) |
| Unrecognised misplacement |
0/40 (0%) |
0/40 (0%) |
0/40 (0%) |
0/120 (0%) |
| Successful attempts within 10s | 31/40 (77.5%) | 39/40 (97.5%)** | 39/40 (97.5%)** | 109/112 (97%) |
Times are presented in seconds as averages (95% confidence interval). Attempts are presented as absolute numbers (95% confidence interval). Successful airway management and misplacements are presented as proportions of CPR sessions (percentages).
*: p< 0.05 hands off time compared with the first evaluation (paired t-test).
**:p<0.025 (corrected to Sidak) hands-off time compared with the first evaluation (paired t-test).