ATI RN
WGU Pathophysiology Final Exam
1. A patient is prescribed raloxifene (Evista) for osteoporosis. What is the primary therapeutic action of this medication?
- A. It stimulates the formation of new bone.
- B. It decreases bone resorption and increases bone density.
- C. It increases calcium absorption in the intestines.
- D. It increases the excretion of calcium through the kidneys.
Correct answer: B
Rationale: The correct answer is B. Raloxifene works by decreasing bone resorption and increasing bone density, which helps in the prevention and treatment of osteoporosis. Choice A is incorrect as raloxifene does not directly stimulate the formation of new bone. Choice C is incorrect because raloxifene does not primarily affect calcium absorption in the intestines. Choice D is incorrect as raloxifene does not increase the excretion of calcium through the kidneys.
2. The parents of a 4-year-old girl have sought care because their daughter has admitted to chewing and swallowing imported toy figurines that have been determined to be made of lead. Which of the following blood tests should the care team prioritize?
- A. White blood cell levels with differential
- B. Red blood cell levels and morphology
- C. Urea and creatinine levels
- D. Liver function panel
Correct answer: B
Rationale: The correct answer is B: Red blood cell levels and morphology. Lead poisoning primarily affects red blood cells, causing anemia. Therefore, the priority test would be to assess red blood cell levels and morphology. Choice A (White blood cell levels with differential) is incorrect as lead poisoning does not primarily affect white blood cells. Choice C (Urea and creatinine levels) is unrelated to lead poisoning and not a priority in this scenario. Choice D (Liver function panel) is also not the priority as lead poisoning's primary impact is on the red blood cells, not the liver.
3. An MRI scan of a 33-year-old female client with new-onset seizures has revealed a lesion on her frontal lobe. Which of the following signs and symptoms would most likely be a direct result of this lesion?
- A. Changes in sensation or movement in the client's limbs
- B. Fluctuations in blood pressure
- C. Changes in speech and reasoning
- D. Increased intracranial pressure
Correct answer: C
Rationale: The correct answer is C: Changes in speech and reasoning. The frontal lobe is responsible for higher cognitive functions, including speech and reasoning. A lesion in this area can lead to difficulties in speech production, language comprehension, and reasoning abilities. Choices A, B, and D are incorrect. Changes in sensation or movement in the client's limbs are more associated with lesions in the motor or sensory cortices of the brain, not the frontal lobe. Fluctuations in blood pressure are often related to autonomic nervous system dysfunction, which is controlled by other brain regions. Increased intracranial pressure is typically seen in conditions like brain tumors or head trauma, not directly related to a frontal lobe lesion.
4. A 70-year-old woman has difficulty with driving, and she has been frequently getting lost. Her husband said she has also been acting strangely and seems to want to sleep a lot. He said the other night she kept saying she was seeing animals such as lions in her room. He says her memory is not too bad, but he is very concerned about her health. Physical examination reveals an alert woman with stable vital signs. Bradykinesia and limb rigidity are noted. These findings are consistent with:
- A. Alzheimer's disease.
- B. vascular dementia.
- C. dementia with Lewy bodies.
- D. frontotemporal dementia.
Correct answer: C
Rationale: The correct answer is dementia with Lewy bodies (DLB). Hallucinations, parkinsonian symptoms (like bradykinesia and limb rigidity), and fluctuating cognition are characteristic of DLB. Alzheimer's disease (Choice A) typically presents with memory loss as a prominent feature. Vascular dementia (Choice B) is associated with a history of strokes and step-wise cognitive decline. Frontotemporal dementia (Choice D) often presents with changes in behavior and personality rather than the parkinsonian symptoms seen in this case.
5. What specific instructions should the nurse provide to ensure proper administration of alendronate (Fosamax) for the treatment of osteoporosis?
- A. Take the medication with a full glass of water and remain upright for at least 30 minutes.
- B. Take the medication at bedtime to ensure absorption during sleep.
- C. Take the medication with milk to enhance calcium absorption.
- D. Take the medication with food to prevent gastrointestinal upset.
Correct answer: A
Rationale: The correct answer is to take the medication with a full glass of water and remain upright for at least 30 minutes. This is important to prevent esophageal irritation and ensure proper absorption. Choice B is incorrect because alendronate should be taken in the morning on an empty stomach, at least 30 minutes before eating or drinking anything other than water. Choice C is incorrect because alendronate should not be taken with milk as it can interfere with its absorption. Choice D is incorrect because alendronate should be taken on an empty stomach, not with food.
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