Penlington reported equations for the internal diameter of an endotracheal tube for a child. The author is from Coventry in England.
Patient selection: Western European child
Parameter:
(1) age in years
Age < 6.5 Years
Age > 6.5 Years
ID of ET Tube in mm
((age) / 4) + 4.5
((age) / 3) + 3.5 OR
((age) / 3) + 3.75
The author recommends that tubes one size larger and one size smaller than the estimated one be available.
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Specialty: Pulmonology, Pedatrics
