How to memorize different tube sizes in pediatric?
Ans: as simple as 1-2-3-4.
■ 1 x ETT = Uncuffed ETT diameter
■ 2 x ETT = NG or OG or Foley
■ 3 x ETT = Depth of ETT
■ 4 x ETT = Chest tube (max size)
You just have to remember that ETT = 4 + (age/4)