Chapter 154 - Cochlear Implants

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Ryan Palmer
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    The upper age limit with regards to cochlear implantation criteria is

    • 65
    • 75
    • 85
    • None
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Chapter 154 - Cochlear Implants - Quiz
About This Quiz

This quiz on Chapter 154 - Cochlear Implants assesses knowledge on candidate criteria, anatomical considerations, and technical aspects of cochlear implantation. It's designed for learners in medical fields, particularly focusing on otolaryngology and audiology.

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  • 2. 

    Insertion of the cochlear lead is into the

    • Scala media

    • Scala tympani

    • Scala vestibule

    • Cochlear antrum

    Correct Answer
    A. Scala tympani
    Explanation
    The correct answer is Scala tympani. The cochlear lead is inserted into the Scala tympani, which is one of the three fluid-filled channels in the cochlea of the inner ear. The Scala tympani is located at the lower part of the cochlea, and it is separated from the Scala media by the basilar membrane. This channel is important for transmitting sound vibrations to the auditory nerve, which allows us to perceive sound.

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  • 3. 

    The facial recess is bound by

    • Head of the malleus posteriorly

    • CN VII medially

    • Fossa incudus laterally

    • Chorda tympani posteriorly

    Correct Answer
    A. CN VII medially
    Explanation
    The facial recess is a small space located in the middle ear cavity. It is bound by various structures, including the head of the malleus (a small bone in the middle ear), the fossa incudis (a depression in the middle ear wall), and the chorda tympani (a nerve that runs through the middle ear). However, the structure that bounds the facial recess medially is the CN VII, which refers to the facial nerve.

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  • 4. 

    Which of the following is not a candidate for cochlear implant

    • 46 year with BOR syndrome who went deaf at 16 months

    • 12 month old male with two deaf parents

    • 79 year old male with SRT score of 40% on the left and 35% in the right

    • 12 year old male with severe profound hearing loss s/p meningitis 4 months ago

    Correct Answer
    A. 46 year with BOR syndrome who went deaf at 16 months
    Explanation
    The 46-year-old with BOR syndrome who went deaf at 16 months is not a candidate for a cochlear implant because the individual has been deaf for a significant portion of their life. Cochlear implants are typically recommended for individuals who have severe to profound hearing loss and have not benefited from hearing aids. Since this individual has been deaf since early childhood, a cochlear implant may not provide significant benefit as their auditory system has not been stimulated for a long time.

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  • 5. 

    3. The following CT scan findings are a contraindication to cochlear implants

    • Mondini malformation

    • Michel malformation

    • Sclerosing labytinthitis

    • Aberrant carotid artery

    Correct Answer
    A. Michel malformation
    Explanation
    Michel malformation is a congenital inner ear anomaly characterized by the absence of the cochlea and the cochlear nerve. This condition is a contraindication to cochlear implants because cochlear implants require a functioning cochlea and cochlear nerve to transmit sound signals to the brain. Therefore, individuals with Michel malformation would not benefit from cochlear implants as they do not have the necessary structures for sound perception and transmission.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 08, 2010
    Quiz Created by
    Ryan Palmer
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