hearing loss - PowerPoint PPT Presentation

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hearing loss

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Hearing loss may be caused by a number of factors, including: genetics, ageing, exposure to noise, some infections, birth complications, trauma to the ear, and certain medications or toxins.[2] A common condition that results in hearing loss is chronic ear infections. – PowerPoint PPT presentation

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Title: hearing loss


1
Hearing loss
  • Types of hearing loss

2
Types of hearing loss
  • There are four types of hearing loss -
  • 1. Auditory processing Disorders
  • 2. Counductive
  • 3. Sensorineural
  • 4. Mixed

3
Auditory processing disorders
  • Auditory processing disorders occur when the
    brain has problem processing the information
    contained in sound such as understanding speech
    and working out where sound is coming Kids with
    this condition cant process what they hear in
    same way other kids do because there ear and
    brain not full coordinate
  • Trouble understanding speech- Kids with APD are
    thought to hear normally because They can usually
    hear sound that are delivered one at time in a
    very quiet environment (such as a sound treated
    room). These kind of problem usually happen when
    there is background noise. Which is often the
    case in social situations . so kids with ADP can
    have trouble understanding what is being said to
    them when they are in noisy places like a
    background, Sports events and the cafeteria
    parties.

4
Symptoms of Auditory processing disorder
  • Symptoms of ADP can take from mild to severe and
    can take many types of form, if you think your
    child have a problem ask to yourself these
    questions
  • Are noisy environment upsetting your children ?
  • Does your child behavior and performance improve
    in quieter settings?
  • Is your child disorganized and forgetful?
  • Does your child have difficulty following
    directions , whether simple or complicated ,
  • Cause - Often the cause of ADP isnt known.
    Evidence suggests that head trauma, lead
    poisoning and chronic could play a role
    sometimes they can be multiple causes.

5
Conductive hearing loss
  • Conductive hearing loss occurs when there is
    problem with the outer or middle ear which
    interferes with the passing sound to the inner
    ear. It can be caused by such things as too much
    ear wax, a punctured eardrum , a fluid build up
    or abnormal growth in the middle ear such as
    otosclerosis. It is more common in children and
    indigenous populations. Surgery and sometimes of
    technology can be used to treat conductive
    hearing loss Such as bone conduction, hearing
    aids, bone anchored hearing devices and middle
    ear implants
  • Presentation - Conductive hearing loss makes all
    sounds seem faint and muffled.the hearing loss
    is worse in low frequencies. Conductive hearing
    loss usually identified through newborn hearing
    screening or may be identified because the baby
    has microtia or other facial abnormalities.
    Conducting hearing loss developing during
    childhood is easily due to otitis media with
    effusion and may present speech and language
    delay or difficulty hearing later onset of
    conducting hearing loss may have and insidious
    onset to related chronic middle ear disease.

6
Sensorineural Hearing Loss
  • Sensorineural Hearing Loss - It occurs as a
    consequence of damaged or deficient cochlear
    hair cell May be abnormal at birth, or damaged
    using lifetime of an individual . there are both
    external causes of damage including noise trauma
    infection and drugs, as well as intrinsic causes,
    including genetic mutations, a common cause or
    exacerbating factor in Sensorineural Hearing Loss
    is prolonged exposure to environmental noise for
    example being in a loud workplace without wearing
    protection or using headphone at high volume for
    a long period. Exposure to avery loud noise such
    as bomb blast can cause noise included hearing
    loss.

7
  • Symptoms of sensorineural hearing loss -
  • Frequent symptoms of SNHL are loss of acuity in
    distinguishing foreground voices against nosies
    background difficulty understanding on the phone
    some kinds of sounds seeming excessively loud or
    shrill difficulty understanding some parts
    speech (fricatives and sibilants loss of
    directionality of sound (especially with high
    frequency sounds) perception that people mumble
    when speaking, and difficulty understanding
    speech similar symptoms are also associated with
    other kinds of hearing loss audiometry or other
    diagnostic tests are necessary to distinguish
    sensorineural hearing loss.
  • Identification of sensorineural hearing loss is
    usually made by performing a pure tone audiometry
    in which bone conduction threshold measured and
    speech audiometry may be helpful testing is
    performed by audiologist . there is no proven or
    recommended treatment or cure for SHNL management
    of hearing loss is usually by hearing strategies
    and hearing aid . in case of profound or total
    deafness a cochlear implant is a specialised
    hearing aid which may restore a functional level
    of hearing SHNL is a least partially preventable
    by avoiding environmental noise chemical and
    drugs And head trauma, treating or inoculating
    against certain triggering diseases and condition
    like meningitis.

8
Mixed hearing loss
  • Sometimes a conductive hearing loss occurs in
    combination with hearing loss (SNHL). When this
    is the case is called a mixed hearing loss in
    other words mixed hearing loss there is at the
    same time damage to the outer and middle ears
    ability to conduct sound in to the inner ear and
    the brain damage to inner ear or auditory nerve.
  • Cause of mixed hearing loss - there are
    several cause of mixed hearing loss including
    those for sensorineural hearing loss these can
    include illness drugs genetic causes of the inner
    ear. Causes of conductive hearing loss may
    including earwax fluid in the middle ear, Ear
    infection perforated eardrums and malformation
    for outer and inner middle ear.

9
  • Symptoms of mixed hearing loss the symptoms of
    mixed hearing loss are reduced hearing in one of
    both ears (bilateral mixed hearing loss ).
  • Treatment of mixed hearing loss depending on
    the degree and make up of mixed hearing loss, It
    may be treated with medications surgery, hearing
    aids or an implantable bone conduction hearing
    system a baha bone conduction implant is an
    effective for mixed hearing loss because it
    totally bypass the conductive element of the
    hearing loss and need only to address the
    sensorenuel element . a health professional can
    talk to through the options and help you make the
    most informed design if you don't already have
    someone to speak to.when considering , what to
    the most import thing is to have all the
    information.
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