A 67-year-old man is brought in by his son, who is deeply concerned by his father’s sudden onset of ataxia, myoclonus, and neurocognitive defects. Diffusion weighted MRI identifies multifocal gray matter hyperintensities in the subcortical and cortical regions. An EEG reveals slow, symmetric sharp spikes. What is the most likely diagnosis?
Lewy body dementia
Alzheimer's disease
Huntington’s disease
Sporadic Creutzfeldt-Jakob disease
The Correct Answer is D
Choice A reason: Lewy body dementia presents with cognitive fluctuations, visual hallucinations, and parkinsonism, but the acute onset of myoclonus and multifocal MRI findings are not typical.
Choice B reason: Alzheimer’s disease presents with gradual cognitive decline rather than sudden onset of ataxia and myoclonus, making it less likely.
Choice C reason: Huntington’s disease is a hereditary neurodegenerative disorder with chorea, psychiatric symptoms, and gradual cognitive decline, not acute multifocal neurologic deficits.
Choice D reason: Sporadic Creutzfeldt-Jakob disease is a prion disease characterized by rapidly progressive dementia, myoclonus, ataxia, and characteristic MRI and EEG findings, matching this patient’s presentation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Fixed costs remain constant regardless of the volume of patients or services, such as rent or salaries, unlike postage.
Choice B reason: Objective cost is not a standard accounting classification for business expenses.
Choice C reason: Managerial cost refers to costs used for internal decision-making, not the nature of the cost itself.
Choice D reason: Variable costs change in direct proportion to the volume of service, such as postage or supplies, which increase with patient communication needs.
Correct Answer is B
Explanation
Choice A reason: The PHQ-9 is useful for initial screening and monitoring of depressive symptoms but is not designed to provide a detailed assessment of depression severity once a diagnosis has been made.
Choice B reason: The BDI is a validated tool for measuring the intensity and severity of depressive symptoms in patients already diagnosed with depression, making it ideal for monitoring response to treatment.
Choice C reason: The Beck Hopelessness Scale measures hopelessness, which is a component of depression, but it does not assess overall depressive severity.
Choice D reason: SLUMS assesses cognitive functioning and is not a measure of depression severity.
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