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Conductive hearing loss occurs when there is a problem conducting sound waves anywhere along the route through the outer ear, tympanic membrane (eardrum), or middle ear (ossicles).
Conductive hearing loss occurs uniformly over all frequencies, resulting in sound and voices which seem faint or muffled. For basic screening, hearing loss with a one-sided conductive component can be differentiated through the combined use of both the Weber and Rinne tests. When a Weber test is carried out, sound localizes to the ear affected by the conductive loss. Pure tone audiometry, a standardized hearing test over a set of frequencies from 250Hz to 8000Hz, may be administered by a medical doctor or audiologist, with the result plotted separately for each ear on an audiogram.
Congenital stenosis or atresia of the external auditory canal (narrow or blocked ear canal). Barotrauma unequal air pressures in the external and middle ear.[2] This can temporarily occur, for example, by the environmental pressure changes as when shifting altitude, or inside a train going into a tunnel.

Treatment falls into three modalities: surgical, pharmaceutical,and management, depending on the nature and location of the specific cause. If you manage this site and have a question about why the site is not available, please contact us directly. To comply with Wikipedia's lead section guidelines, please consider modifying the lead to provide an accessible overview of the article's key points in such a way that it can stand on its own as a concise version of the article.
This type of hearing loss may occur in conjunction with sensorineural hearing loss (mixed hearing loss) or alone. If the hearing loss has a neural component on only one side, the Weber test, in which a tuning fork is touched to the midline of the forehead, can determine which ear is affected; the person will hear the sound softer in the affected ear. A Rinne test, in which air conduction is normally greater than bone conduction, is usually negative (abnormal a€“ note unusual terminology here compared with other medical tests), and shows greater bone conduction than air conduction.
The shape of the plot reveals the degree and nature of hearing loss, distinguishing conductive hearing loss from other kinds of hearing loss. It is managed by any of various methods of ear clearing maneuvers to equalize the pressures, like swallowing, yawning, or the Valsalva maneuver.

This can be an isolated phenomenon or can occur as part of a syndrome where development of the 1st and 2nd branchial arches is seen such as in Goldenhar Syndrome, Treacher Collins Syndrome, Branchio-oto-renal syndrome etc.
Some conditions are amenable to surgical intervention such as middle ear fluid, cholesteatoma, otosclerosis.
The Rinne test, which tests air conduction versus bone conduction is negative (abnormal result).
These can be on a soft or hard headband or can be inserted surgically, a bone anchored hearing aid, of which there are several types.

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