Immittance

Tympanometry is used to gather information about the child’s middle ear and ear drum. Quickly, a small amount of pressure is applied to the ear using a plastic earplug to determine if there is a significant amount of pressure in the middle ear, whether the eardrum is intact, or if a pressure-equalization (PE) tube is clear and open. 

Acoustic Reflex measurements add information about the status of the middle ear, facial nerve and auditory nerve. Your child will hear beeps from an earplug with no response necessary.