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    Add as FriendDeaf child ppt by Dr Manas

    by: Dr Manas Ranjan Rout

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    1 : The Deaf child Dr Manas 1
    2 : Definition The child with profound hearing loss(>90dB) or total deafness fail to develop speech and have termed as deaf-mute or deaf & dumb. 2
    3 : Aetiology Prenatal causes Perinatal causes Postnatal causes 3
    4 : Prenatal causes Genetic defect Michel aplasia (complete failure) Mondini aplasia (cochlea 1 &1/2 turn) Schiebe aplasia (abnormal membranous cochlea and saccules - commonest) Alexander aplasia (affect basal turn of cochlea) Maternal infection (TORCHES) Drugs –Aminoglycosides, Thalidomide Radiation in first trimaster of pregnency Nutritional defic, Diabetes, Hypothyroidism 4
    5 : Perinatal causes Anoxia Prematurity Birth injury Neonatal jaundice Neonatal meningitis Ototoxic drugs 5
    6 : Postnatal causes Genetic Alport’s, Klippel-Feil, Hurler syndrome Viral infection (Measles,Mumps, Rubella) Secretory otitis media Ototoxic drugs Trauma Noise induced deafness 6
    7 : Evaluation of a deaf child Finding of cause by detail history Assessment of hearing in infants and children 7
    8 : Assessment of hearing in infants and children Screening Procedures Arousal test Auditory response cradle Behaviour observation audiometry Distraction techniques Conditioning technique Play audiometry Visual reorientation audiometry Speech audiometry 8
    9 : e. Objective tests Evolked response audiometry (Electrocochleography, BERA) Impedence audiometry Otoacoustic emission Heart rate audiometry 9
    10 : Management Parental guidance Hearing aid Development of speech and language Auditory oral communication Manual communication Total communication Education of deaf child Vocational guidance 10
    11 : Rehabilitation of the hearing impaired Instrumental devices Hearing aids Cochlear implants Assistive devices Training Speech reading Auditory training Speech conservation 11
    12 : Hearing aid Hearing aid is the device to amplify the sound reaching the ear. It has three parts ie. microphone, amplifier, receiver. Two types – Air conduction hearing aid (mostly used) Bone conduction hearing aid 12
    13 : Air conduction hearing aid Body worn type Behind the ear type (BTE) Spectacle type In the ear type (ITE) Canal type (ITC, CIC) 13
    14 : Indications of hearing aid SN HL Deaf children Conductive deafness 14
    15 : Cochlear implant External device Microphone Speech processor Transmitting coil Internal device Receiver Electrode array 15
    16 : Cochlear implant 16
    17 : Cochlear implant 17
    18 : Assistive devices Assisting listening devices and system Alerting devices Telecommunication devices 18
    19 : Training Speech reading Auditory training Speech conservation 19
    20 : Thank You Thank You 20

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