Table 1 Comparison of demographic, airway-related, and anesthetic variables between direct and indirect epiglottis elevation groups
Variable | Direct epiglottis elevation group (n = 51) | Indirect epiglottis elevation group (n = 51) | Standardized difference* (95% CI) |
|---|---|---|---|
Demographics | |||
Age (y) | 56.0 (52.0–61.0) | 57.0 (52.0–62.0) | −0.09 (− 0.48, 0.30) |
Male sex | 10 (19.6%) | 20 (39.2%) | −0.44 (− 0.83, − 0.05) |
Height (cm) | 159.2 (7.8) | 161.0 (8.3) | −0.23 (− 0.62, 0.16) |
Weight (kg) | 61.7 (9.9) | 62.1 (10.9) | −0.04 (− 0.43, 0.34) |
BMI (kg/m2) | 23.7 (22.2–26.2) | 23.3 (21.6–26.6) | 0.13 (− 0.26, 0.52) |
Airway | |||
Modified Mallampati class | 0.16 (− 0.22, 0.55) | ||
1 | 14 (27.5%) | 23 (45.1%) | |
2 | 18 (35.3%) | 11 (21.6%) | |
3 | 12 (23.5%) | 8 (15.7%) | |
4 | 7 (13.7%) | 9 (17.6%) | |
Interincisor gap (cm) | 4.0 (4.0–5.0) | 4.5 (4.0–5.0) | −0.46 (− 0.86, − 0.07) |
Thyromental distance (cm) | 8.0 (8.0–9.0) | 9.0 (8.0–9.5) | −0.43 (− 0.82, − 0.03) |
Sternomental distance (cm) | 16.0 (15.0–17.0) | 16.0 (15.0–17.5) | −0.32 (− 0.72, 0.07) |
Neck circumference (cm) | 35.0 (33.0–37.0) | 35.0 (33.0–38.0) | −0.09 (− 0.47, 0.30) |
Anesthesia | |||
ASA physical status | 0.03 (− 0.36, 0.42) | ||
1 | 20 (39.2%) | 22 (43.1%) | |
2 | 26 (51.0%) | 23 (45.1%) | |
3 | 5 (9.8%) | 6 (11.8%) | |
Duration (min) | 105.0 (90.0–130.0) | 100.0 (85.0–130.0) | 0.09 (− 0.30, 0.48) |