Immittance testing is a part of the testing completed when you see an Audiologist for a hearing evaluation. It evaluates the function of the eardrum, the middle ear, and the acoustic reflex.
The purpose of immittance testing is to help localize the pathology of the ear and determine what part of the ear may be causing the hearing loss, or other symptoms associated with the ear. It helps to determine whether the hearing loss is conductive, mixed, or sensorineural.
Immittance testing includes tympanometry testing, acoustic reflex testing, and acoustic reflex decay testing.
These tests are performed by placing a small plastic probe into the ear canal and delivering a slight pressure change, as well as some loud tones. The test requires no response from the patient, making it great when testing children.