Pediatric Endotracheal Tube (ETT) Size

Why Use

Pediatric airways obviously grow with age; it is critical a properly-sized tube is inserted during intubation.

When to Use

Broselow tape or other pediatric emergency management aid not available and child requires intubation.

Formula

Advice

Ventilator settings are always required after intubation but are beyond the scope of this rapid information: Tidal volume in pediatrics is often set 6-8mL/kg Respiratory rate is often set 25-40 breaths / minute FiO 2 is often started at 1.0 (100%) Post-intubation care also typically includes: Chest x-ray to confirm tube placement Medications for sedation and analgesia Elevation of the head of the bed NG tube to decompress the stomach ABG after 15-30 minutes after to assess oxygenation and acid-base status

More Information

This formula typically is applicable to children ages 1-12. Below that, consider an endotracheal tube reference card ; above 12, typically most adult sizes (6.5-8.0) can be used.