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Visual and Auditory SystemsMedical-Surgical Nursing-7th edition

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Blepharitis is often a chronic, bacterial infection of the _________. It produces redness, crusting and swelling.
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Eyelid
_________ is a drooping of the upper lid margin. It can be myogenic in cause (myasthenia gravis for example) or caused by a tumor or excessive skin.
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Ptosis
The inward turning of an upper or lower eyelid margin is called...
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Entropion
The outward turning of the lower lid margin can be caused by eyelid tumor, herniated orbital fat or extravasation of fluid and is called...
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Ectropion
What causes conjunctivitis?
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It can be caused by bacteria, viruses, allergies or a chemical irritation
You are conducting a visual inspection of a client's sclera and you notice small blood spots on the sclera. You know this is called...
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Subconjunctival hemorrhage, caused when conjunctival blood vessels rupture
How can a corneal abrasion be visualized?
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Through the use of fluorescein dye
What conditions can cause exophthalmos?
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Hyperthyroidism, intraocular or periorbital tumors
A client has uneven, constricted pupils. What is this called, and what causes it?
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Anisocoria, is usually caused by CNS disorders. In a small percentage of the population it is a normal finding.
What should a nurse suspect if a client has an abnormal pupillary response to light, or abnormal accommodation?
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A CNS disorder. Note: General anesthesia can temporarily cause these abnormalities.
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An overaction or underaction of extraocular muscles presents as...
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Strabismus (deviation of the eye in one or more direction)
A client calls you and says she has lost her peripheral vision and is wondering what could be happening. You know that she could be suffering from what visual abnormality?
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Glaucoma, interruption of the visual pathway (like a tumor), or a migraine.
A client comes in with her daughter, who is guiding her through the waiting room and into the examination room. The client indicates she has no central vision. You know the first thing to look for would be...
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Macular degeneration
What conditions can cause cataracts?
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Aging, trauma, diabetes, or long-term systemic corticosteroid therapy
What makes up the peripheral auditory system?
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The external, middle and inner ear.
The peripheral auditory system is concerned with ________ & ________ of sound.
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Reception and perception of sound
What is the function of the inner ear?
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Hearing and Balance
What makes up the central auditory system?
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The brain and its pathways
What is the function of the central auditory system?
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It integrates and assigns meaning to sounds heard
What are the functions of the external and middle portions of the ear?
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To conduct and amplify sound waves.
Sound conducted through the external and middle ear is called _________ conduction.
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Air conduction
  
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