1.
Characteristic of pediatric airways and available devices for SBI, OLV and ILV
| Age | Laryngeal diameter (mm) | Tracheal diameter (mm) | ETT ID (mm, uncuffed) | Type of ETT | BBs (Fr) | Arndt blocker® (Fr) | UniventTM tube (Fr) | DLT Marraro Bilumen Tubes (ID, mm) | DLT Bronchoport Rusch® (Fr) | DLT Bronchocath Mallinckrodt (Fr) |
| Legenda: [SBI] selective bronchial intubation; [OLV] one-lung ventilation; [ILV] independent-lung ventilation; [ETT] endotracheal tube; [ID] internal diameter; [Fr] French size; [DLT] double-lumen tube; [BBs] bronchial blockers: fogarty embolectomy catheter, arterioseptostomy catheter, embolectomy catheters; [GA] gestational age; #25/26-28 Fr. | ||||||||||
| < 28 weeks GA | 2.2-3.1 | 2.5-5 | 2.5 | Normal ETT | na | na | na | 2.0+2.0 | na | na |
| 28- < 34 weeks GA | 2.9-3.5 | 2.7-5.5 | 2.5 | Normal ETT | na | na | na | 2.0+2.5 | na | na |
| 34- < 38 weeks GA | 2.7-5.5 | 3-6 | 2.5-3 | Normal ETT | na | na | na | 2.5+2.5 | na | na |
| 38-41 weeks GA | 3.7-6.4 | 3.7-6.5 | 3-3.5 | Normal ETT | 2-3 | na | na | 2.5+3 | na | na |
| 1 year | 4.5-10 | 5.2-7.8 | 3.5-4.0 | Microlaryngeal tube | 3 | na | na | 3+3 | na | na |
| 3 years | 6-12 | 6.3-9 | (Age years/4)+4 | Microlaryngeal tube | 5 | 5 | na | 3+3.5 | na | na |
| 5-6 years | 7-12 | 8-10 | (Age years/4)+4 | Microlaryngeal tube | 5 | 5 | 3.5 (uncuffed) | 3.5+3.5 | 25-26 | 26-27 |
| 8-10 years | 7-16 | 12 | (Age years/4)+4 | Microlaryngeal tube | 5 | na | 4.5 (cuffed) | 25/26-28# | 26-27 | 27-28 |