Table 3 Comparison of NGT, SNGT, and Macaca and human respiratory tract diameter
No | Diameter | External (mm) | Internal (mm) |
|---|---|---|---|
1 | NGT | 5 | 3 |
2 | SNGT | 5 | 3 |
3 | Macaca fascicularis trachea | 12 | 10 |
4 | Human trachea | 24 | 20 |
No | Diameter | External (mm) | Internal (mm) |
|---|---|---|---|
1 | NGT | 5 | 3 |
2 | SNGT | 5 | 3 |
3 | Macaca fascicularis trachea | 12 | 10 |
4 | Human trachea | 24 | 20 |