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Instituto Comenius de Educação
      Data 30 de agosto de 2011
            Professor:Alexandre
          Aluno:Marcos Augusto
           Série 7º série/8º ano


         Surdez
   A surdez é uma deficiência auditiva que resulta da lesão
    do aparelho auditivo, e pode ser total ou parcial.

   Existem 3 tipos de surdez:

   de transmissão, que resulta da transmissão de um
    problema auditivo no ouvido externo ou no ouvido
    médio;

   neuro sensorial, quando abrange o ouvido interno e
    nervo auditivo;

   mista, quando tem características dos dois tipos
    anteriores.
Causa
   A surdez é uma condição que se manifesta
    com diferentes graus, desde perdas auditivas
    leves até a surdez profunda.

   Grande parte dos casos de surdez são
    transmitidos durante a gravidez como
    conseqüência do consumo de álcool e drogas,
    má nutrição da mãe, doenças como diabetes,
    ou mesmo infecções que surgem durante a
    gestação como sarampo ou rubéola.
   Outro grande causador de deficiência auditiva é exposição a
    ruídos intensos (mais de 75 decibéis), como de máquinas
    industriais, música alta, armas ou foguetes por exemplo.
    Doenças infecciosas bacterianas ou virais, assim como o uso
    de alguns medicamentos podem causar a surdez.

   Frequentemente a dificuldade auditiva desenvolve-se em
    pessoas com mais de 65 anos de idade devido ao processo
    degenerativo natural.

   O tratamento para a surdez depende da sua causa, podendo-
    se recorrer à próteses ou implantação de sistemas eletrônicos
    considerando também a profundidade da deficiência auditiva.

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Causas e tipos de surdez

  • 1. Instituto Comenius de Educação Data 30 de agosto de 2011 Professor:Alexandre Aluno:Marcos Augusto Série 7º série/8º ano Surdez
  • 2. A surdez é uma deficiência auditiva que resulta da lesão do aparelho auditivo, e pode ser total ou parcial.  Existem 3 tipos de surdez:  de transmissão, que resulta da transmissão de um problema auditivo no ouvido externo ou no ouvido médio;  neuro sensorial, quando abrange o ouvido interno e nervo auditivo;  mista, quando tem características dos dois tipos anteriores.
  • 3. Causa  A surdez é uma condição que se manifesta com diferentes graus, desde perdas auditivas leves até a surdez profunda.  Grande parte dos casos de surdez são transmitidos durante a gravidez como conseqüência do consumo de álcool e drogas, má nutrição da mãe, doenças como diabetes, ou mesmo infecções que surgem durante a gestação como sarampo ou rubéola.
  • 4. Outro grande causador de deficiência auditiva é exposição a ruídos intensos (mais de 75 decibéis), como de máquinas industriais, música alta, armas ou foguetes por exemplo. Doenças infecciosas bacterianas ou virais, assim como o uso de alguns medicamentos podem causar a surdez.  Frequentemente a dificuldade auditiva desenvolve-se em pessoas com mais de 65 anos de idade devido ao processo degenerativo natural.  O tratamento para a surdez depende da sua causa, podendo- se recorrer à próteses ou implantação de sistemas eletrônicos considerando também a profundidade da deficiência auditiva.