Presented By Dr Gulab Pamnani Assistant Professor National Institute Of Ayurveda Jaipur Hearing loss D efinition WHO recommened that The term Deaf should be applied when the sense of hearing is non functional for ordinary purposes of life ID: 909942
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Slide1
Hearing Loss & Its Management
Presented ByDr. Gulab PamnaniAssistant Professor National Institute Of Ayurveda Jaipur
Slide2Hearing loss
DefinitionWHO recommened thatThe term Deaf should be applied when the sense of hearing is non functional for ordinary purposes of life.
Hearing loss more than 90
db
in the better ear (profound impairment) or total loss of hearing in both earsImpairment of hearing.
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Slide3Hearing loss
Grading of hearing lossGrade
Hearing Impairment
Hearing Acuity
% of Hearing ImpairmentGrade IMild impairment26-40 dbLess than 40%
Grade II
Moderate
41-55
db40-50%Grade IIISevere56-70 db50-75%Grade IVProfound71-90 db75-100%Near total91 db & above100%Total No hearing100%
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Slide4Hearing loss
Classification of hearing lossTwo types : Non-organic and OrganicNon-organic : two types 1. Malingering 2. psychogenic
Organic : three types
1. Conductive hearing loss 2. Sensorineural hearing loss
3. Mixed hearing loss
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Slide5Hearing loss
Conductive hearing loss(CHL)Any disease process which interferes with the conduction of sound to reach cochlea causes CHLMost common causes of CHLEar waxASOM
CSOM
Tympano sclerosis
OtosclerosisOtitis media with effusion (in children)
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Slide6Characteristics of CHL
Rinne’s test – Negative (BC > AC)Weber test – Lateralised to worst earAbsolute bone conduction – NormalSpeech understanding – Good
Intolerance to loud sound – Absent
Speech of patient – Low voice
Common associated symptom – Otorrhea/earachePure tone audiometry –
Usually lower frequencies are affected more
Air-bone gap – present
Hearing loss – Never > 60-70db
Site of lesion – External and Middle ear6
Slide7Conductive Hearing loss
Pure tone audiometry – Usually lower frequencies are affected moreAir-bone gap – presentSite of lesion – External and Middle ear
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Slide8Conductive Hearing loss
Treatment Treatment of the cause1. Removal of external auditory canal occlusions Impacted wax, foreign body, tumours,
meatal
stenosis etc.
2. Myringotomy – Acute Otitis Media3. Grommet – Otitis Media with effusion
4.
Stapedectomy
– Otosclerosis
5. Tympanoplasty – TM perforations & Ossicular disruptions6. Hearing aids – When surgery is not possible, refused or failed.8
Slide9Sensorineural Hearing loss
Results from lesions ofCochlea 8th
cranial nerve
Central auditory pathways.
Common causes of SNHLCongenital
In
fections : Labyrinthitis, Meningitis
Trauma to labyrinth and CN VIII in
fractures of temporal boneTumors : CN VIII acoustic neuromaSystemic diseases : Diabetes, Multiple sclerosis, Syphilis, hypothyroidism, Kidney disease, Autoimmune disorders.Presbycusis9
Slide10Characteristics of SNHL
Rinne’s test – Positive (AC > BC)Weber test – Lateralised to better earAbsolute bone conduction – ReducedSpeech understanding – Poor
Intolerance to loud sound – Present in cochlear lesion
Speech of patient – Loud voice
Common associated symptom – TinnitusPure tone audiometry –
Usually higher frequencies are affected more
Air-bone gap – Absent
Hearing loss – can be >60-70 db
Site of lesion – Internal ear, CN VIII & central auditory connections10
Slide1111
Slide12Treatment o
f SNHLTreatment of the cause.Discontinuation of ototoxic drugs.Anti depressant therapy.Vasodilators. Rehabilitation with hearing aids.
Cochlear implant.
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Slide13In Ayurveda
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