Proper positioning for ventilation and intubation for children older than two years of age

(A) The oral (O), tracheal (T), and pharyngeal (P) axes are in divergent planes.
(B) A towel under the occiput brings the external auditory canal anterior to the shoulder, aligning the T and P axes.
(C) The extension of the head on the neck, with the mouth and nose facing the ceiling, aligns the O axis with the T and P axes.