Impedance audiometry is done in?
It is an objective test, widely used in clinical practice and is paicularly useful in children. It consists of: Tympanometry Acoustic reflex measurements By changing the pressure in a sealed external auditory canal and then measuring the reflected sound energy, it is possible to find the compliance or stiffness of the tympano-ossicular system and thus find the healthy or diseased status of the middle ear.
Otomycosis
Meniere's disease
Pressure changes in middle ear
Cholesteatoma