Table 2 Comparisons of cervical spine movement during videolaryngoscopic intubation between direct and indirect epiglottis elevation groups
Variable | Direct epiglottis elevation group (n = 51) | Indirect epiglottis elevation group (n = 51) | Difference in means (98.33% CI) | P value |
|---|---|---|---|---|
Cervical spine movement during videolaryngoscopic intubation (°) | ||||
Occiput–C1 | 3.9a (4.0) | 5.8 (3.4) | −1.9 (− 3.5, − 0.3) | 0.011 |
C1–C2 | 3.8a (4.3) | 3.9 (4.1) | −0.1 (− 1.9, 1.8) | 0.930 |
C2–C5 | −1.1a (5.0) | 0.2 (5.6) | −1.4 (− 3.7, 1.0) | 0.198 |
Cervical spine angle before videolaryngoscopic intubation (°) | ||||
Occiput–C1 | 28.2 (6.3) | 26.9 (5.9) | 1.3 (− 1.4, 4.0) | 0.280 |
C1–C2 | 14.5 (5.4) | 15.2 (6.3) | −0.7 (− 3.3, 1.9) | 0.564 |
C2–C5 | 10.5 (6.5) | 10.3 (7.6) | 0.2 (− 3.0, 3.3) | 0.902 |
Cervical spine angle during videolaryngoscopic intubation (°) | ||||
Occiput–C1 | 32.0 (6.8) | 32.7 (5.7) | −0.7 (− 3.5, 2.1) | 0.573 |
C1–C2 | 18.4 (5.8) | 19.1 (6.1) | −0.7 (− 3.4, 1.9) | 0.527 |
C2–C5 | 9.5 (6.2) | 10.5 (6.9) | −1.0 (− 4.0, 1.9) | 0.426 |