Endotracheal tube for children

1. ENDOTRACHEAL TUBE SIZE
CHILDREN

2. FOR INFANTS UP TO 1 YEAR OF AGE
• UNCUFFED TUBE WITH AN INTERNAL DIAMETER OF 3.5 MM
• A CUFFED ETT WITH AN INTERNAL DIAMETER OF 3.0 MM MAY BE USED FOR
INFANTS MORE THAN 3.5 KG. AND <1 YEAR

3. FORMULA
• UNCUFFED ET SIZE = 4 + (AGE / 4)
• CUFFED ET SIZE = 3.5 + (AGE / 4)

4. ONE SIZE LESS
• FOR CUFFED TUBE FOR AGE LESS THAN 1 YR

5. ADDITIONAL
• KEEP ONE HALF SIZE LARGER AND ONE HALF SIZE SMALLER THAN CALCULATED
SHOULD ALSO BE AVAILABLE FOR UNCUFFED OR CUFFED ENDOTRACHEAL TUBE

6. THUMB RULE
• ET TUBE ID SIZE IS SAME AS THE DIAMETER OF THE LITTLE FINGER OF THE
PATIENT