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MSN 570 Advanced Pathophysiology Final 2024
1. Which of the following is a factor that leads to increased risk for dehydration in the elderly?
- A. More insensible losses
- B. Increase in muscle mass
- C. Decline in kidney function
- D. Decrease in fat
Correct answer: C
Rationale: The correct answer is C: Decline in kidney function. As people age, their kidneys may not work as effectively in conserving water and concentrating urine, leading to a higher risk of dehydration. Choice A is incorrect because more insensible losses do not directly relate to an increased risk of dehydration in the elderly. Choice B, an increase in muscle mass, is not a factor that leads to dehydration. Choice D, a decrease in fat, is also not a direct factor contributing to dehydration in the elderly.
2. A healthcare professional is assessing a client with suspected myasthenia gravis. Which symptom would the healthcare professional expect to find?
- A. Muscle atrophy
- B. Facial weakness
- C. Ptosis and diplopia
- D. Increased muscle tone
Correct answer: C
Rationale: Ptosis (drooping eyelid) and diplopia (double vision) are classic symptoms of myasthenia gravis. Muscle atrophy (Choice A) is not a typical early manifestation of myasthenia gravis. While facial weakness (Choice B) can occur, it is not as specific as ptosis and diplopia. Increased muscle tone (Choice D) is more indicative of conditions like spasticity, not myasthenia gravis.
3. A client with multiple sclerosis (MS) is experiencing a relapse. Which of the following factors is most likely contributing to the relapse?
- A. Taking an over-the-counter multivitamin
- B. Experiencing high levels of emotional stress
- C. Getting a flu shot
- D. Engaging in strenuous physical activity
Correct answer: B
Rationale: Emotional stress can trigger a relapse in multiple sclerosis by exacerbating symptoms. While taking an over-the-counter multivitamin and getting a flu shot are generally safe, they are not typically known to trigger MS relapses. Engaging in strenuous physical activity, if done carefully, can actually have benefits for individuals with MS by improving strength and mobility, so it is less likely to be the cause of a relapse.
4. A patient is starting on atorvastatin (Lipitor) for hyperlipidemia. What important instruction should the nurse provide?
- A. Take the medication at night to reduce the risk of muscle pain.
- B. Avoid consuming grapefruit juice while taking this medication.
- C. Take the medication in the morning with breakfast.
- D. Avoid taking the medication with alcohol to reduce the risk of liver damage.
Correct answer: A
Rationale: The correct answer is A. Atorvastatin should be taken at night to reduce the risk of muscle pain and other side effects. Taking it at night aligns with the body's natural rhythm of cholesterol production, optimizing its effectiveness. Choice B is incorrect because grapefruit juice can increase the risk of side effects by affecting the metabolism of atorvastatin. Choice C is incorrect as taking atorvastatin in the morning does not maximize its effectiveness. Choice D is incorrect because alcohol consumption can increase the risk of liver damage when combined with atorvastatin.
5. The unique clinical presentation of a 3-month-old infant in the emergency department leads the care team to suspect botulism. Which assessment question posed to the parents is likely to be most useful in the differential diagnosis?
- A. Have you ever given your child any honey or honey-containing products?
- B. Is there any family history of neuromuscular diseases?
- C. Has your baby ever been directly exposed to any chemical cleaning products?
- D. Is there any mold in your home that you know of?
Correct answer: A
Rationale: The correct answer is A. Botulism in infants is often linked to honey consumption. Asking the parents if they have ever given their child any honey or honey-containing products can provide crucial information for the differential diagnosis. This is important because infant botulism is commonly associated with the ingestion of honey contaminated with Clostridium botulinum spores. Choices B, C, and D are less relevant to botulism in infants as they do not directly relate to the typical causes of the condition. Family history of neuromuscular diseases (choice B) may be important for other conditions but not specifically for infant botulism. Direct exposure to chemical cleaning products (choice C) and the presence of mold in the home (choice D) are not typical risk factors for infant botulism.
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