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The Weber test is administered by holding a vibrating tuning fork on top of the patient's head. The Weber test is a screening test for hearing performed with a tuning fork. [1] [2] It can detect unilateral (one-sided) conductive hearing loss (middle ear hearing loss) and unilateral sensorineural hearing loss (inner ear hearing loss). [3]
Most causes of conductive hearing loss can be identified by examination but if it is important to image the bones of the middle ear or inner ear then a CT scan is required. CT scan is useful in cases of congenital conductive hearing loss, chronic suppurative otitis media or cholesteatoma, ossicular damage or discontinuity, otosclerosis and ...
Sensorineural hearing loss: Conductive hearing loss: Anatomical site: Inner ear, cranial nerve VIII, or central processing centers Middle ear (ossicular chain), tympanic membrane, or external ear: Weber test: Sound localizes to normal ear in unilateral SNHL Sound localizes to affected ear (ear with conductive loss) in unilateral cases Rinne test
What causes tinnitus? New research suggests that it may be due to hidden hearing loss, not detected on common hearing tests, and may have similarities to phantom limb pain.
A Rinne test should always be accompanied by a Weber test to also detect sensorineural hearing loss and thus confirm the nature of hearing loss. The Rinne test was named after German otologist Heinrich Adolf Rinne (1819–1868); [ 3 ] [ 4 ] the Weber test was named after Ernst Heinrich Weber (1795–1878).
Hearing loss may have many different causes, but among those with tinnitus, the major cause is cochlear injury. [36] In many cases no underlying cause is identified. [2] [38] Ototoxic drugs also may cause subjective tinnitus, as they may cause hearing loss, [15] or increase the damage done by exposure to loud noise. [39]
Mixed hearing loss is a combination of conductive and sensorineural hearing loss. Chronic ear infection (a fairly common diagnosis) can cause a defective ear drum or middle-ear ossicle damages, or both. In addition to the conductive loss, a sensory component may be present. Central auditory processing disorder
The shape of the audiogram resulting from pure-tone audiometry gives an indication of the type of hearing loss as well as possible causes. Conductive hearing loss due to disorders of the middle ear shows as a flat increase in thresholds across the frequency range. Sensorineural hearing loss will have a contoured shape depending on the cause ...
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