Table 3.

Suggested Tracheal Tube Size and Depth of Insertion According to Weight and Gestational Age

Weight, gGestational
Age, wk
Tube Size,
mm (ID)
Depth of Insertion
From Upper Lip, cm
<1000<28 2.56.5 –7
1000–200028–343.07 –8
2000–300034–383.58 –9
>3000>38 3.5–4.0>9
  • ID indicates inner diameter.