Vertigo other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Other Diagnostic Tests

Auditory system

Audiometry

• Tests of auditory system (hearing) function include pure-tone audiometry, speech audiometry, acoustic-reflex, electrocochleography (ECoG), otoacoustic emissions (OAE), and auditory brainstem response test (ABR; also known as BER, BSER, or BAER).
• More sensitive detection of hearing loss at specific frequencies
• Better test for speech discrimination (disproportionately affected in retrocochlear disease)
• Most useful for distinguishing cochlear vs. retrocochlear causes of peripheral lesion
• Detects sensorineural hearing loss in almost all cases acoustic neuroma

Vestibular system

• Tests of vestibular system (balance) function include electronystagmography (ENG), rotation tests, Caloric reflex test, and Computerized Dynamic Posturography (CDP).

• Carotid doppler (presence of TIAs)
• Dix-Hallpike maneuver
• Barany maneuver (less specific than Dix-Hallpike)
• Evaluation of hearing