Endotracheal tube sizes and depth of insertion

 EGA

(weeks)

Weight

 (kg)

ETT Size

 (mm)

Depth of insertion

(cm from upper lip)
<28 <1 kg 2.5 6 - 7
28 – 34 1 - 2 kg 3.0 7 – 8
34 – 38 2 – 3 kg 3.5 8 – 9
>38 >3 kg 3.5 – 4.0  9 - 10

A nice calculator can be found at the following site: NICU Tools

Reference:

American Academy of Pediatrics and American Heart Association.

Neonatal Resuscitation Textbook. 2000.

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