ETT Sizes by Age
Reference guide for appropriate Endotracheal Tube sizing.
| Age / Patient Type | Recommended ETT Size (ID mm) |
|---|---|
| Premature (< 1000g) | 2.5 |
| Premature (1000-2500g) | 3.0 |
| Neonate (0-3 mo) | 3.0 - 3.5 |
| Infant (3-9 mo) | 3.5 - 4.0 |
| Infant (9-18 mo) | 4.0 - 4.5 |
| Toddler (18mo - 3 yr) | 4.5 |
| Child (3 - 6 yr) | 5.0 |
| Child (6 - 8 yr) | 5.5 |
| Pre-teen (8 - 10 yr) | 6.0 |
| Teen (12+ yr) | 6.5 - 7.0 |
| Adult Female | 7.0 - 7.5 |
| Adult Male | 7.5 - 8.5 |