{"product_id":"2940153925844","title":"Hearing Loss (Deafness), A Simple Guide To The Condition, Diagnosis, Treatment And Related Conditions","description":"\u003cp\u003eHearing Loss (Deafness) is a medical disorder that consists of partial or complete loss of hearing, also known as hearing impairment.\u003cbr\u003eThe normal lower minimum of the hearing range is 0-20 decibels (dB), where 0 dB is the threshold for the discernment of sound at a given frequency for people with normal hearing.\u003cbr\u003eNormal dB levels are around 30 dB for a whisper, 50 dB for average home noises and 60 dB for conversational speech.\u003cbr\u003eThe hearing pain threshold is at about 140 dB (which is about the sound of a jet engine).\u003cbr\u003eHearing loss is calculated in decibels hearing loss (dB HL).\u003cbr\u003e1. 20-40 dB HL: mild, cannot hear whispers.\u003cbr\u003e2. 41-70 dB HL: moderate, cannot hear conversational speech.\u003cbr\u003e3. 71-95 dB HL: severe, cannot hear shouting.\u003cbr\u003e4. \u0026gt;95 dB HL: profound, cannot hear sounds that would be painful to listen to for a hearing person.\u003cbr\u003eThere are two forms of deafness:\u003cbr\u003eA. Conductive hearing loss - this occurs when there is a problem in the transmission of sound waves from the external ear, through the middle ear.\u003cbr\u003eThe disease processes can happen at any level along this part of the ear.\u003cbr\u003e1. The external ear canal\u003cbr\u003ea. Obstruction caused by wax\u003cbr\u003eb. Blockage caused by foreign body\u003cbr\u003ec. Obstruction caused by infection (otitis externa)\u003cbr\u003ed. Blockage caused by ear polyps\u003cbr\u003e2. Eardrum\u003cbr\u003ea. Perforation caused by trauma\u003cbr\u003eb. Perforation caused by infection\u003cbr\u003ec. Scarred eardrum from injury or infection\u003cbr\u003e3. Middle ear bones\u003cbr\u003ea. Dislocation of the bones from injury or infection\u003cbr\u003eb. Damage to the bones from injury or infection\u003cbr\u003ec. Fixed bones or osteosclerosis (hardening of the bones from aging)\u003cbr\u003e4. Middle ear infection\u003cbr\u003eInfection of the middle ear happens with fluid in the middle ear cavity stopping sound from passing through\u003cbr\u003eThe causes of conductive hearing loss can often be prevented and treated.\u003cbr\u003eB. Sensorineural hearing loss - this indicates problems occurring in the cochlea (the most frequent site of disease), cochlear nerve or brain stem, leading to abnormal or absent neurosensory impulses.\u003cbr\u003eSensorineural problems are more frequent in adults.\u003cbr\u003e1. Acoustic neuroma\u003cbr\u003e2. Age-related hearing loss\u003cbr\u003e3. Childhood infections, such as meningitis, mumps, scarlet fever, and measles\u003cbr\u003e4. Meniere's Disease\u003cbr\u003e5. Regular exposure to loud noises (such as from work or recreation)\u003cbr\u003e6. Usage of certain medicines\u003cbr\u003eThere may be:\u003cbr\u003ea. Damage to hearing organ or cochlea which transmit nerve impulse to the hearing nerve and on to the brain\u003cbr\u003eb. Injury to the hearing nerve (auditory nerve) from loud sounds, infection or injury\u003cbr\u003eDiagnosis\u003cbr\u003eThe whispered voice test and tuning fork tests (Weber's and Rinne's tests) can be carried out simply and effectively.\u003cbr\u003eHearing test (audiogram) can confirm the presence and severity and type of hearing loss\u003cbr\u003eTreatment\u003cbr\u003e1. Remove foreign body or wax\u003cbr\u003e2. Eardrum perforation restoration\u003cbr\u003e3. Using tubes in the eardrums to remove fluid\u003cbr\u003e4. Repair of the small bones in the middle ear (ossiculoplasty)\u003cbr\u003eHearing aids and cochlear implants\u003cbr\u003eLearning sign language\u003c\/p\u003e\u003cp\u003eTABLE OF CONTENT\u003cbr\u003eIntroduction\u003cbr\u003eChapter 1 Hearing Loss (Deafness)\u003cbr\u003eChapter 2 Cause\u003cbr\u003eChapter 3 Symptoms\u003cbr\u003eChapter 4 Diagnosis\u003cbr\u003eChapter 5 Treatment\u003cbr\u003eChapter 6 Prognosis\u003cbr\u003eChapter 7 Ear Wax\u003cbr\u003eChapter 8 Perforated Eardrum\u003cbr\u003eEpilogue\u003c\/p\u003e","brand":"Kenneth Kee","offers":[{"title":"Default Title","offer_id":47103507661040,"sku":"2940153925844","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940153925844_p0.jpg?v=1764102346","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940153925844","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}