ETT size >1 years of age
age/4 + 3.5 (cuffed)
age/4 + 4 uncuffed - which doesn’t get used.
ETT depth for peds
tube size x 3
ETT suction size
tube size x 2
neonatal <1kg tube size
2.5 tube
neonatal 1-2kg tube size
3 tube
> 2kg neonate tube size
3.5 tube (same until about 1 year)
neonatal tube depth
weight in kg + 6
UAC depth
3 x BW + 9 (T6-T9)
UVC depth
kg x 3 + 9 /2 + 1 + length of stump
ETT suction depth
tube size + 5cm to the top number, plus .5