Chapter 53 Sensory Disorder Study Guide
Pain with movement of auricle, entire side of head aches, erythema, scaling, pruritus, edema, watery discharge, crusting of external ear, drainage (serosanguineous or purulent), dizziness, and decreased hearing, are all signs and symptoms of what?
external otitis
An individual who's max visual acuity of 20/200 with corrective eyewear and/or visual field sight capacity is reduced to 20 degrees is described as what? (normal visual field range is 180 degrees)
legally blind
Over time, what can damage the hair cells?
noise pollution
What is another name for the Organ of Corti?
organ of hearing
Haemophilus influenzae, streptococcus pneumonae, proteus, klebsiella, pseudomonas organisms, allergies, exposure to cigarette smoke, myoplasma, and several viruses, can all contribute to what?
otitis media
What procedure uses an ultrasound to break up and remove the cataract through a small incision?
phacoemulsification
What procedure uses a laser beam to destroy new blood vessels, seal leaking vessels, and help prevent retinal edema?
photocoagulation
Sudden or gradual development of flashes of light, floating spots, hairnets, loss of specific field of vision, and enlarged dark spots with detachment progression are all signs and symptoms of what?
retinal detachment
What is the most common symptom that distinguishes that a patient has Keratitis versus another inflammatory eye disease?
severe eye pain
Why is otitis media more prevalent in children age 6-36 months?
shorter and straighter eustachian tubes
ARMD is characterized by what symptom?
slow, insidious central vision loss
The removal of stapes of the middle ear and insertion of a graft and prosthesis is called what?
stapedectomy
The Weber test is performed by placing what in the center of the patient's forehead or on the maxillary incisors?
the stem of a vibrating fork
What corrects a perforated eardrum, dislocation, or necrosis of the small bone of the middle ear?
tympanoplasty
What is the removal of excess vitreous fluid caused by hemorrhage and replaced with normal saline called?
vitrectomy
What is the fraction term used to describe a person's visual acuity who can read at 20 ft what a normal eye can read at 40 ft?
20/40 vision
What occurs if there is an abrupt angle change of the iris, causing rapid vision loss and dramatic symptoms?
AACG or acute angle closure glaucoma
The eye's ability to focus on objects at various distances by focusing the image of an object on the retina by changing the curvature is called what?
Accommodation
What should person who has a cataract repaired avoid?
Activities that increase IOP e.g. bending, stooping, coughing, lifting
What is the name of the contact list of agencies to assist and educate the visually impaired?
American Foundation for the Blind
What grid assesses for disturbances in the central part of your vision, by asking the patient to view the grid, concentrating on the dot and report areas of distortion?
Amsler vision grid
What nursing interventions should be implemented for a tympanoplasty?
Bed rest, elevate head 40 degrees, operative side facing up.
What are the signs and symptoms of cataracts?
Blurred, hazy, or fuzzy vision; abnormal color perception; difficulty reading; photosensitivity
What should a nurse do when assisting a blind person to walk in an unfamiliar hospital?
Describe surroundings
What disorder affects the retinal blood vessels and is characterized by capillary microaneurysms, hemmorrhage,
Diabetic retinopathy
When does hearing improve from a stapedectomy?
Doesn't improve until edema subsides and packing is removed.
What nursing interventions should be implemented for a stapedectomy?
External ear packing, remain in bed 24 hr, position flat with operative side facing upward.
What is the first priority when someone splashes a chemical in their eye?
Flush eyes
What are the causes of cataracts?
Genetics; acquired by systemic disease, trauma, toxins, intraocular inflammation; age; smoking
A procedure where the corneal flap is folded back and then an excimer laser moves some of the internal layers of the cornea is called what?
LASIK
What position should a patient maintain for 4-5 days postop?
Lay on abdomen or sit forward, rest on nonoperative side.
Keeping the side rail up, assisting with ambulation, providing an environment with minimal stimulation, and positioning, are all precautions for what type of disease?
Meniere's Disease
What should be applied to eye socket postop?
Pressure dressing
If a hearing aid whistles, what intervention should be completed?
Reinsert the ear mold
What are the 4 taste sensations?
Swee
The test that assesses visual acuity by having the patient placed 20 ft away from a chart and asked to read lines is called what?
The Snellen test
What assess auditory acuity and also determines whether defective hearing in an ear is a conductive loss caused by a middle ear problem or a sensorineural loss?
The Weber test
What is the name of the hair cell receptors that respond to sound waves by simulating the cochlear nerve?
The organ of corti
What do miotic eye drops do for a patient with glaucoma?
They constrict pupils
Which two tests both show a lateralization of sound, more to the affect ear, when performed?
Weber and audiometric
The patient is asked to view an Amsler vision grid, concentrating on the dot and report areas of what?
distortion
What is the surgical removal of the eyeball called?
enucleation
Build-up of cerumen, otitis media with effusion, foreign bodies, otosclerosis, and stenosis of the external auditory canal, are all conditions that many cause what?
conductive hearing loss
Sjogren syndrome causes "grittiness" in the eye due to what?
deficit fluid production