Fig. 1.
Fig. 2.
Fig. 3.
Length of ETT at incisors varying with height
| Height(cm) | Mean (± SD) | |
|---|---|---|
| ETT length at teeth after x ray | <165 | 20.01(1.35) |
| 165–180 | 20.73 (1.26) | |
| >180 | 23.5 (0.50) |
Demographic data
| Parameter | USG group | Conventional group | p value |
|---|---|---|---|
| Age (years) | 52.48 ± 17.65 | 50.04 ± 16.61 | 0.617 |
| Height (cm) | 166. ± 18.9 | 162.7 ± 6.9 | 0.140 |
| ETT size (mm) | 7.9 ± 0.45 | 7.6 ± 0.54 | 0.055 |
| Female No: (%) | 5 (20%) | 12 (48%) | |
| Male No: (%) | 20 (80%) | 13 952%) | 0.072 |