Which of the following should the nurse use as a basis for explaining the etiology of Alzheimer's disease to the family of a client with this disease?
Correct Answer: B
Rationale: The correct answer is B because Alzheimer's disease is a primary dementia that is characterized by the presence of beta-amyloid protein in neurons leading to the formation of senile plaques. This explanation is accurate as it describes the key pathological process underlying Alzheimer's disease.
Choice A is incorrect because Alzheimer's disease is a primary dementia, not a secondary dementia. Choice C is incorrect because the etiology of Alzheimer's disease is not related to diet or toxic substances, so it is not treatable in that way. Choice D is incorrect because while Alzheimer's disease is irreversible, it is not treatable with antihypertensive medications as these medications are not effective in managing the disease process of Alzheimer's.