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	Hearing impairment - Wikipedia, the free encyclopedia
		Hearing aids and cochlear implants may alleviate some of the problems caused by hearing impairment, but are often insufficient.
		Conductive hearing loss is caused by damage/malfunction of the middle or outer ear system (external ear canal, ear drum, or structures in the middle ear space including the malleus, incus and stapes bones).
		Prelingual hearing impairment exists when the impairment is congenital or otherwise acquired before the individual has acquired speech and language, thus rendering the disadvantages more difficult to treat because the child is unable to access audible /spoken communication from the outset.
	en.wikipedia.org /wiki/Hearing_impairment (2950 words)

	Kennedy Krieger Institute: Hearing Impairment in Down Syndrome
		Conductive hearing impairments are the most common type of hearing deficit found in individuals with Down syndrome.
		Conductive: This type of hearing impairment is generally due to impacted cerumen (ear wax), middle ear fluid (otitis media), and/or atresia (abnormally developed outer ear and/or ear canal).
		Sensorineural Impairment: This type of hearing impairment is a result of damage to the hair cells located in the inner ear or to the auditory nerve itself.
	www.kennedykrieger.org /kki_misc.jsp?pid=2122 (822 words)

	MEI: Otosclerosis Patient Brochure
		Your hearing impairment is caused by otosclerosis, a disease of the middle ear bones.
		Otosclerosis is a common cause of hearing impairment and is hereditary.
		In two percent (2%) of the cases the hearing may be further impaired due to the development of scar tissue, infection, blood vessel spasm, irritation of the inner ear or a leak of inner ear fluid (fistula).
	www.michiganear.com /library/brochures/otosclerosis (1615 words)

	Hearing Aids San Antonio - HearLab
		Conductive hearing loss occurs when sound is not conducted efficiently through the ear canal, eardrum, or tiny bones of the middle ear, resulting in a reduction of the loudness of perceived sound.
		Conductive losses may result from earwax blocking the ear canal, fluid in the middle ear, middle ear infection, obstructions in the ear canal, perforations (hole) in the eardrum membrane, or disease of any of the three middle ear bones.
		Central hearing impairment occurs when auditory centers of the brain are affected by injury, disease, tumor, hereditary, or unknown causes.
	www.hearlab.com /common-hearing-loss.asp (540 words)

	Hearing Impairment
		Hearing impairment occurs when there's a problem with or damage to one or more parts of the ear.
		The most common cause of conductive hearing loss in kids and teens is otitis (pronounced: o-tie-tus) media, which is the medical term for an ear infection that affects the middle ear.
		Some babies are born with hearing impairment due to infections or illnesses that the mother had while she was pregnant, which can interfere with the development of the inner ear.
	kidshealth.org /teen/diseases_conditions/sight/hearing_impairment.html (1441 words)

	Congenital Conductive Hearing Loss
		Conductive hearing loss in children is usually caused by middle ear fluid, but it can also be caused by congenital anatomic abnormalities.
		Conductive hearing loss is the most common type of hearing loss in children, and it occurs when sound transmission is physically impeded in either the external and/or the middle ear.
		Children with a unilateral conductive hearing loss and normal contralateral hearing can be managed conservatively with preferential seating with or without a hearing aid, and surgical management should be deferred until the child is old enough to participate in the decision making process.
	www.bcm.edu /oto/grand/031804.htm (4403 words)

	Parents (Site not responding. Last check: 2007-11-02)
		Good hearing ability is critically important for the development of speech and language skills, which enable the child to communicate, understand, and express ideas, and needs both to their peers and to teachers.
		This type of hearing impairment is usually medically treatable (by physician or an Ear, Nose and Throat specialist) and often caused by an ear infection in the middle ear or wax build up in the ear canal.
		If a child has a hearing impairment that lets them hear only some of the world around them, then what that child learns about the speech and language in the world is limited only to the parts of speech and language that they hear.
	www.childguidanceclinic.ca /Parents_Impairment.htm (693 words)

	HEARING LOSS - Dr.G.K.HEBBAR'S MICRO EAR SURGERY & ENT ENDOSCOPY CENTRE (Site not responding. Last check: 2007-11-02)
		Conductive hearing loss occurs when sound waves are prevented from reaching the inner ear because of disease in the external or middle ear.
		The most common types of conductive hearing loss in children are due to collection of fluid in the middle ear (Middle ear effusion) as a result of inflammation.
		Such hearing loss may be a result of genetic disorders but in most cases the damage to the inner ear or the nerve is secondary to aging, noise, drugs, or disease.
	entcentre.faithweb.com /faqs/hearingloss/hearing_loss.htm (1747 words)

	Frequently Asked Questions - New York Eye & Ear Infirmary
		Hearing impairment may be caused by otosclerosis, a disease of the inner ear bone.
		Movements of the membrane are transmitted across the middle ear to the inner ear fluids by three small ear bones.These middle ear bones (hammer or malleus, anvil or incus and stirrup or stapes) act as a transformer, changing sound vibrations in air into fluid waves in the inner ear.
		The amount of hearing loss due to involvement of the stapes and the degree of nerve impairment present can be determined only by careful hearing tests.
	www.nyee.edu /faqlist.html?tablename=faq&key=93 (615 words)

	Evaluation and Treatment of Hearing Impairment (Site not responding. Last check: 2007-11-02)
		Although hearing impairment is most often not life-threatening and does not directly restrict physical activity, it is disabling since it interferes with quality of life.
		The symptoms of hearing loss (e.g., not answering when spoken to, answering inappropriately, or requiring repetition) often encourage people to talk to and treat the hearing impaired as if their cognitive abilities were also diminished.
		This air conduction testing measures the responsiveness of the entire auditory system, from the ear canal through the middle ear to the cochlea and associate neural pathways to the brain, any loss by air conduction may be due to a disorder anywhere in the entire auditory system.
	wata.org /medaspects/reading9-1.htm (2051 words)

	Etiologies and Causes of Deafness (Site not responding. Last check: 2007-11-02)
		Hearing disorders may be caused directly by HIV infection of the cochlea or of the central auditory system, but are often caused by opportunistic infections rather than HIV itself-i.e., the body's loss of its normal resistance to infection allows other non-related infections to take hold.
		Conductive deafness often occurs from frequent middle ear infections, and in some cases Down patients are born with irregularities in the middle and inner ears that can also cause conductive hearing impairment.
		Conductive hearing loss, as well as the more frequently occurring sensorineural hearing loss, is caused by dysplasia of the inner ear.
	library.gallaudet.edu /dr/faq-etiol.html (8937 words)

	What's Hearing Loss?
		Hearing loss, or hearing impairment (say: im-pare-ment), happens when there is a problem with one or more parts of the ear or ears.
		Sensory hearing impairment is almost always permanent and a kid's ability to talk normally may be affected.
		Hearing loss can happen because a person was born with parts of the ear that didn't form correctly and don't work well.
	kidshealth.org /kid/health_problems/sight/hearing_impairment.html (575 words)

	Ear
		Many mammals can move the pinna in order to focus their hearing in a certain direction, in much the same way that they can turn their eyes.
		The inner ear comprises both the organ of hearing (the cochlea) and the labyrinth or vestibular apparatus, the organ of balance located in the inner ear that consists of three semicircular canals and the vestibule.
		This is a common cause of partial hearing loss, and the reason why anyone near guns or heavy machinery should wear earmuffs or earplugs.
	www.brainyencyclopedia.com /encyclopedia/e/ea/ear.html (845 words)

	Ear Article, Ear Information (Site not responding. Last check: 2007-11-02)
		Many mammals can move the pinna in order tofocus their hearing in a certain direction, in much the same way that they can turn their eyes.
		The inner ear comprises both the organ of hearing (the cochlea)and the labyrinth or vestibular apparatus, the organ of balance located in theinner ear that consists of three semicircular canals and the vestibule.
		This is a commoncause of partial hearing loss, and the reason why anyone near guns or heavy machinery should wear earmuffs or earplugs.
	www.anoca.org /sound/hearing/ear.html (824 words)

	Texas Neurosciences Institute - Mechanism of Hearing (Site not responding. Last check: 2007-11-02)
		Most often, this type of hearing impairment is due to a hair cell loss.
		This occurs frequently in children in connection with an upper respiratory infection or allergies and accounts for the hearing impairment associated with this condition.
		Because the tube in constantly open the patient may hear himself breathe and ears is voice reverberate in the affected ear.
	www.texasneurosciences.com /hearing&ear/mechanism_of_hearing.html (926 words)

	Hearing aids
		It is estimated that 30% of all people over 65 have significant hearing impairment.
		Conductive hearing loss occurs when sound has problems getting through the external and middle ear.
		Surgery or a hearing aid may be helpful for this type of hearing loss.
	www.mercydesmoines.org /ADAM/Encyclopedia/imagepages/8685.asp (181 words)

	HEARING AIDS - BROAD PERSPECTIVES - Dr G K HEBBAR'S MICRO EAR SURGERY & ENT ENDOSCOPY CENTRE (Site not responding. Last check: 2007-11-02)
		A hearing aid is a device consisting of a microphone, an electronic amplifier, and a receiver.
		If the hearing impairment is of the sensorineural or nerve type, the person can hear speech sounds if they are loud enough but cannot understand what is being said.
		Not only does this hearing loss comes with aging but today’s urban youth are suffering such impairment much earlier than their parents did thanks to noisier surroundings.
	entcentre.faithweb.com /faqs/HearingAids_BroadPerspectives/hearing_aids_broad_perspectives.htm (2391 words)

	Hearing Loss (part 1), NCBDDD, CDC
		Hearing loss severity is based on how well a person can hear the frequencies or intensities most often associated with speech.
		This is especially true if the child is born with a hearing loss or loses his or her hearing before 2 years of age.
		However, in most children with hearing loss that is due to a genetic cause, the hearing loss is not part of a syndrome.
	www.cdc.gov /ncbddd/dd/ddhi.htm (2694 words)

	Untitled (Site not responding. Last check: 2007-11-02)
		Because the tube is constantly open the patient may hear himself breathe and hears his voice reverberate in the affected ear.
		The presence of this serous fluid limits or "dampens" the vibration of the eardrum and causes a mild to moderate hearing impairment.
		The primary objective of surgical treatment of chronic serous otitis media is to re-establish ventilation of the middle ear, or equalize pressure of the middle ear with that in the ear canal.
	www.audiologyonline.com /pagebuilder/userpages/audiologyandhearing/library/librarydisp.asp?libitemid=36 (2732 words)

	ESG: Otosclerosis (Site not responding. Last check: 2007-11-02)
		Otosclerosis is a common cause of hearing impairment.
		After two years, the hearing level, the degree of tinnitus, and the severity of imbalance are reevaluated.
		Further hearing loss can occur, however, future loss might be due to the normal aging process or due to the toxin from the otosclerotic bone.
	www.earspecialtygroup.com /dis_otos.html (779 words)

	Articles - Ear (Site not responding. Last check: 2007-11-02)
		The Eustachian tubes are normally pinched off at the nose end, to prevent being clogged with phlegm, but they may be opened by lowering and protruding the jaw; this is why yawning helps relieve the pressure felt in the ears when on board an aircraft.
		The cochlea (latin for "snail") is a spiralled, hollow, conical chamber of bone filled with perilymph and endolymph (in the scala media), a fluid medium that receives the sound vibrations transmitted from the air to the oval window through the ear drum and ossicles of the middle ear (see above).
		This is a common cause of partial hearing loss and is the reason why anyone using firearms or heavy machinery should wear earmuffs or earplugs.
	www.wholez.com /articles/Ear (1089 words)

	Medical Treatment for Hearing Loss (Site not responding. Last check: 2007-11-02)
		Hearing loss is not an illness but a symptom of an underlying disorder.
		In most patients with conductive hearing loss, the disorder can be treated surgically or medically (with drugs) to correct the problem.
		Although the hearing loss is permanent, it is manageable in about 95 percent of cases with hearing aids.
	www.healthatoz.com /healthatoz/Atoz/dc/caz/enth/deaf/hltreat.jsp (629 words)

	Congenital hearing loss and deafness (Site not responding. Last check: 2007-11-02)
		Baha® is suitable for people with a conductive or mixed hearing impairment.
		The conductive loss may be caused by a congenital or other acquired malformation of the middle or external ear resulting in a missing or incomplete ear canal (atresia).
		The Baha sound processor is attached to a small fixture placed in the bone behind the ear, transmitting sound directly to the hearing nerve without involving the ear canal.
	www.entific.com /hearingLoss.asp (255 words)

	Educational Services for the Hearing Impaired (Site not responding. Last check: 2007-11-02)
		Conductive: hearing impairment due to problems in the other or middle ear.
		Sensori-nueral: hearing impairment due to problem in the inner ear.
		No. There are many forms of communication that a student with a hearing impairment may choose to use.
	acc.k12.ar.us /eshi/FAQ'S.htm (253 words)

	Hearing Quick Check
		As a Teacher of the Visually Impaired, you are aware of the importance of hearing for a child with a visual impairment.
		Speech and language development are impacted greatly by hearing impairment.
		Below are typical milestones for a child with normal hearing according to the Alexander Graham Bell Association for the Deaf and Hearing Impaired.
	www.tsbvi.edu /Outreach/deafblind/9Hearing-Quick-Check.htm (745 words)

	Together We Can, Policy (Site not responding. Last check: 2007-11-02)
		Documented unilateral hearing impairment (conductive, sensorineural or mixed) of at least 15 dB
		Documented bilateral hearing impairment (conductive, sensorineural, or mixed) of at least 15 dB
		Has a documented hearing loss and is at risk for a vision loss
	www.twc-deafblind.state.va.us /policy_text.htm (367 words)

	Chronic otitis and ear infection
		Some cases of conductive hearing loss are caused by a chronic infection of the middle or outer ear that results in a persistent and unpleasant discharge.
		Conventional treatment, with or without radical mastoid cavity surgery, has been to fit an air conduction (AC) hearing aid in the affected ear canal.
		In addition the AC device has to be quite powerful and, as a result, some people complain about feedback and sound quality.
	www.entific.com /chronicEarInfection.asp (264 words)

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