The nurse is caring for an elderly client who exhibits signs of dementia. The most common cause of d...

The nurse is caring for an elderly client who exhibits signs of dementia. The most common cause of dementia in an elderly client is

A.delirium.
B.depression.
C.excessive drug us
D.Alzheimer's diseas

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参考答案: D

参考解析: Alzheimer's disease is the most common cause of dementia in the elderly. Approximately 10% of people over age 65 have Alzheimer's disease; about 50% of people over age 85 have the disease. Delirium, or acute confusion, is caused by an underlying disease and isn't itself a cause of dementia. Depression is common in the elderly but, in many cases, manifests itself in apathy, self-deprecation, or inertia--not dementia. Excessive drug use, commonly stemming from the client seeing multiple physicians who are unaware of drugs that other physicians have prescribed, can cause dementia. Although it's a problem among the elderly, it isn't as common as Alzheimer's disease.

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