Penlington reported an equation for determining the internal diameter of an endotracheal tube for a child based on height. This is based on a line-estimate for the data shown in Figure 3 of the paper by Keep and Manford.
Patient selection: child
Parameter:
(1) height in cm
internal diameter of the endotracheal tube in mm =
= (0.045 * (height)) + 0.8
where:
0.045 corresponds to dividing by 22.2
To read more or access our algorithms and calculators, please log in or register.
