A nurse is providing teaching to a group of clients about the changes that occur when clients experience cataracts. Which of the following statements should the nurse include in the teaching?
"Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor."
"Vision changes occur when blood vessels leak fluid or blood under a portion of the retina."
"Vision changes occur when the cloudy lens alters the passage of light through the eye."
"Vision changes occur when retinal tissue pulls away from the blood vessels in the eye."
The Correct Answer is C
A) "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor." This statement describes a mechanism associated with glaucoma, not cataracts. In cataracts, vision changes occur due to the opacity or cloudiness of the lens, not changes in intraocular pressure.
B) "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina." This statement describes a mechanism associated with retinal diseases like diabetic retinopathy, not cataracts. In cataracts, the lens becomes cloudy, affecting the passage of light through the eye.
C) "Vision changes occur when the cloudy lens alters the passage of light through the eye." This statement is correct. Cataracts cause the lens of the eye to become cloudy, which interferes with the passage of light through the eye. This results in vision changes such as blurred vision, glare, and difficulty seeing in low light conditions.
D) "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye." This statement describes a mechanism associated with retinal detachment, not cataracts. In cataracts, the lens becomes opaque, but the retinal tissue remains intact.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Pantoprazole: Pantoprazole is a proton pump inhibitor commonly used to reduce stomach acid production. It is primarily indicated for the treatment of gastroesophageal reflux disease (GERD), peptic ulcers, and other conditions related to excessive stomach acid production. It does not play a role in managing Meniere's disease, which is a disorder of the inner ear characterized by episodes of vertigo, tinnitus, and hearing loss.
B) Warfarin: Warfarin is an anticoagulant medication used to prevent blood clot formation. It is commonly prescribed for conditions such as atrial fibrillation, deep vein thrombosis, and pulmonary embolism. Meniere's disease does not typically require anticoagulant therapy, so warfarin would not be indicated for its treatment.
C) Furosemide: Furosemide is a loop diuretic that helps reduce fluid retention by increasing urine output. In some cases of Meniere's disease, especially those associated with excessive endolymphatic fluid buildup in the inner ear, furosemide may be prescribed to help reduce fluid volume and alleviate symptoms such as vertigo and pressure sensation in the ear.
D) Oxybutynin: Oxybutynin is an anticholinergic medication primarily used to treat overactive bladder and urinary incontinence. It works by relaxing smooth muscle in the bladder, reducing bladder spasms and urinary urgency. While some individuals with Meniere's disease may experience associated symptoms such as frequent urination or urinary urgency, oxybutynin is not a standard treatment for Meniere's disease itself.
Correct Answer is A
Explanation
A. "I can't get out of bed because the room is spinning": The sensation of vertigo, or the perception of spinning or movement when there is none, is a hallmark symptom of Meniere's disease. This sensation is often severe and can be debilitating, leading to difficulty with balance and mobility. Therefore, the client's statement indicating that they cannot get out of bed due to the room spinning is consistent with manifestations of Meniere's disease.
B. "I did feel some fluid dripping from my ear when I laid down": While fluid leakage from the ear can be a symptom of various ear conditions, such as otitis externa or otitis media, it is not typically associated with Meniere's disease. Meniere's disease is characterized by recurrent episodes of vertigo, hearing loss, tinnitus, and a feeling of fullness or pressure in the ear, rather than fluid leakage.
C. "Sometimes I feel slightly dizzy when I am in a loud restaurant": Feeling slightly dizzy in a loud environment may suggest sensitivity to noise (phonophobia) or a mild form of dizziness such as disequilibrium, but it is not specific to Meniere's disease. Meniere's disease typically presents with severe episodes of vertigo rather than mild dizziness.
D. "I often feel like I have cotton balls in my ears": The sensation of having cotton balls in the ears may indicate a feeling of fullness or pressure in the ears, which is a common symptom of Meniere's disease. However, this symptom alone is not sufficient to diagnose Meniere's disease, as it can also occur in other conditions affecting the middle ear, such as eustachian tube dysfunction or otitis media. Additionally, Meniere's disease is primarily characterized by vertigo, not just ear fullness or pressure.
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