A nurse is assessing a client who has Lewy body dementia. The nurse should recognize that which of the following is responsible for changes in thinking, communication, movement, and emotional processing in Lewy body dementia?
Tau protein
Neurofibrillary tangles
Alpha-synuclein protein
Beta-amyloid protein
The Correct Answer is C
A. Tau protein: Tau protein is primarily associated with Alzheimer's disease and other tauopathies, not Lewy body dementia.
B. Neurofibrillary tangles: Neurofibrillary tangles are aggregates of hyperphosphorylated tau protein found in Alzheimer's disease, not typically in Lewy body dementia.
C. Alpha-synuclein protein: Lewy bodies, which are abnormal aggregates of alpha-synuclein protein, are a hallmark pathology of Lewy body dementia. These protein aggregates disrupt neuronal function and are responsible for the cognitive, motor, and emotional symptoms seen in Lewy body dementia.
D. Beta-amyloid protein: Beta-amyloid protein is primarily associated with Alzheimer's disease, not Lewy body dementia. It forms plaques in the brain, which contribute to neurodegeneration and cognitive decline in Alzheimer's disease.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Open-angle glaucoma: Open-angle glaucoma typically presents with increased intraocular pressure and gradual loss of peripheral vision, not with bright flashes of light and dark floating spots.
B. Macular degeneration: Macular degeneration is characterized by central vision loss, not by bright flashes of light and dark floating spots.
C. Meniere’s disease: Meniere’s disease is a disorder of the inner ear characterized by episodes of vertigo, hearing loss, and tinnitus. It does not typically cause bright flashes of light and dark floating spots in the visual field.
D. Retinal detachment: Trauma, such as being tackled while playing football, can lead to retinal detachment, which can manifest with symptoms such as bright flashes of light (photopsia) and dark floating spots (floaters) in the affected eye. This condition is considered a medical emergency and requires prompt evaluation and treatment to prevent permanent vision loss.
Correct Answer is ["B","C","E"]
Explanation
A. Varicose veins: Varicose veins are dilated, twisted veins that commonly occur in the legs and are typically associated with venous insufficiency or venous valve dysfunction rather than valvular dysfunction of the heart.
B. Heart murmur: This is the correct answer. Valvular dysfunction can result in abnormal blood flow patterns across the heart valves, leading to turbulent blood flow and the production of audible heart murmurs upon auscultation.
C. Palpitations: Palpitations, or the sensation of rapid, pounding, or irregular heartbeats, can occur with valvular dysfunction, particularly if the dysfunction leads to alterations in heart rhythm or cardiac output.
D. Abdominal pain: Abdominal pain is not typically associated with valvular dysfunction. It may be a symptom of various gastrointestinal or abdominal conditions, but it is not a direct manifestation of valvular heart disease.
E. Chest pain: This is the correct answer. Chest pain can occur with valvular dysfunction, especially if the dysfunction leads to inadequate blood flow to the heart muscle (ischemia), which can cause angina or chest discomfort.
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