{"product_id":"2940045088374","title":"A Simple Guide to Deafness and Related Ear Diseases","description":"\u003cp\u003eWhat is Deafness?\u003c\/p\u003e\u003cp\u003eDeafness is the inability to hear.\u003c\/p\u003e\u003cp\u003eWhat are the causes of Deafness?\u003c\/p\u003e\u003cp\u003eThe causes of Deafness are:\u003c\/p\u003e\u003cp\u003eA. Conductive hearing loss\u003c\/p\u003e\u003cp\u003eHere sound waves cannot be transmitted from the external environment to the cochlea.\u003cbr\u003eThe problem may lie in\u003c\/p\u003e\u003cp\u003e1. the external ear canal\u003c\/p\u003e\u003cp\u003ea. obstruction caused by wax\u003c\/p\u003e\u003cp\u003eb. obstruction caused by foreign body\u003c\/p\u003e\u003cp\u003ec. obstruction caused by infection (otitis externa)\u003c\/p\u003e\u003cp\u003ed. obstruction caused by ear polyps\u003c\/p\u003e\u003cp\u003e2. eardrum\u003c\/p\u003e\u003cp\u003ea. perforation caused by trauma\u003c\/p\u003e\u003cp\u003eb. perforation caused by infection\u003c\/p\u003e\u003cp\u003ec. scarred eardrum from injury or infection\u003c\/p\u003e\u003cp\u003e3. middle ear bones\u003c\/p\u003e\u003cp\u003ea. dislocation of the bones from injury or infection\u003c\/p\u003e\u003cp\u003eb. damage to the bones from injury or infection\u003c\/p\u003e\u003cp\u003ec. fixed bones or osteosclerosis (hardening of the bones from aging)\u003c\/p\u003e\u003cp\u003e4. middle ear infection\u003c\/p\u003e\u003cp\u003einfection of the middle ear occurs with fluid in the middle ear cavity preventing sound from passing through\u003c\/p\u003e\u003cp\u003eB. Sensorineural Hearing Loss\u003c\/p\u003e\u003cp\u003ea. damage to hearing organ or cochlea which send nerve impulse to the hearing nerve and on to the brain\u003c\/p\u003e\u003cp\u003eb. damage to the hearing nerve (auditory nerve)from loud sounds, infection or injury\u003c\/p\u003e\u003cp\u003eCommon causes of hearing loss are:\u003cbr\u003e1. aging (presbycusis)\u003c\/p\u003e\u003cp\u003e2, acute or chronic exposure to loud noise can cause damage to sensory cells of cochlea\u003c\/p\u003e\u003cp\u003e3. infection of the inner ear by viruses and bacteria such as mumps, measles or influenza\u003c\/p\u003e\u003cp\u003e4. Meniere's disease - a disease with tinnitus, deafness and dizziness\u003c\/p\u003e\u003cp\u003e5. Acoustic neuroma - tumor of the vestibular nerve which lies near to the auditory nerve and affects its function\u003c\/p\u003e\u003cp\u003e6. Ototoxic drugs which can damage the nerves involved in hearing or sensory cells in the cochlea such as:\u003c\/p\u003e\u003cp\u003ea. antibiotics especially gentamycin and vancomycin\u003c\/p\u003e\u003cp\u003eb. diuretics such as frusemide\u003c\/p\u003e\u003cp\u003ec. chemotherapy drugs\u003c\/p\u003e\u003cp\u003eWhat are the symptoms of Deafness?\u003c\/p\u003e\u003cp\u003e1. Deafness is a lack of hearing.\u003c\/p\u003e\u003cp\u003eThe hearing loss is gradual or sudden and can affect one or both ears.\u003c\/p\u003e\u003cp\u003eThere is difficulty in holding a normal conversation in a noisy environment.\u003c\/p\u003e\u003cp\u003ePeople may complain the affected person does not respond when called or speak louder than usual\u003c\/p\u003e\u003cp\u003e2. tinnitus (ringing in the ear) may be present\u003c\/p\u003e\u003cp\u003e3. vertigo (spinning sensation) may be associated with it\u003c\/p\u003e\u003cp\u003e4. pain and discharge from ear is associated with ear infections\u003c\/p\u003e\u003cp\u003eHow is Deafness diagnosed?\u003c\/p\u003e\u003cp\u003eDiagnosis:\u003c\/p\u003e\u003cp\u003e1. complete history, ENT examination\u003c\/p\u003e\u003cp\u003e2. examination of ear canal and eardrum\u003c\/p\u003e\u003cp\u003e3. endoscopy examination of nose and nasopharynx\u003c\/p\u003e\u003cp\u003e4. neurological examination\u003c\/p\u003e\u003cp\u003e5. hearing test (audiogram) can confirm the presence and severity and type of hearing loss\u003c\/p\u003e\u003cp\u003e6. Tympanogram may be performed to detect problems of eardrum and middle ear.\u003c\/p\u003e\u003cp\u003e7. X-rays, CT scan or MRI may used to exclude acoustic neuroma or brain tumors.\u003c\/p\u003e\u003cp\u003eWhat is the treatment of Deafness?\u003c\/p\u003e\u003cp\u003eTreatment\u003c\/p\u003e\u003cp\u003eMedical treatment depends on the underlying problem.\u003c\/p\u003e\u003cp\u003e1. Removal of wax and foreign body in the ear\u003c\/p\u003e\u003cp\u003eEar polyps can be dissolved away with medicines.\u003c\/p\u003e\u003cp\u003e2. Antibiotics oral and topical may be necessary in severe external ear infections.\u003c\/p\u003e\u003cp\u003e3. In the case of eardrum perforation, once the underlying infection is cleared and the perforation still do not close after 3 months, then surgical repair of the perforation may be needed.\u003c\/p\u003e\u003cp\u003e4. If the cause of deafness is due to medication, then the medication should be stopped or changed.\u003c\/p\u003e\u003cp\u003e5. If the cause is prebycusis (due to aging) no medical treatment is needed.\u003c\/p\u003e\u003cp\u003eThe deaf person is assessed to see whether hearing aids will help.\u003c\/p\u003e\u003cp\u003eTABLE OF CONTENT\u003c\/p\u003e\u003cp\u003eChapter 1 Deafness\u003c\/p\u003e\u003cp\u003eChapter 2 Chronic Suppurative Otitis Media\u003c\/p\u003e\u003cp\u003eChapter 3 Ear Drum Perforation\u003c\/p\u003e\u003cp\u003eChapter 4 Ear Infections\u003c\/p\u003e\u003cp\u003eChapter 5 Acoustic Neuroma\u003c\/p\u003e\u003cp\u003eChapter 6 Menieres Disease\u003c\/p\u003e\u003cp\u003eChapter 7 Ear injury\u003c\/p\u003e","brand":"Kenneth Kee","offers":[{"title":"Default Title","offer_id":47082070147312,"sku":"2940045088374","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940045088374_p0.jpg?v=1769889843","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940045088374","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}