ATI RN
ATI Pathophysiology Exam
1. Which of the following is not an autoimmune disease?
- A. Multiple sclerosis
- B. Pernicious anemia
- C. Goodpasture syndrome
- D. Transfusion reaction
Correct answer: D
Rationale: The correct answer is D, Transfusion reaction. Transfusion reaction is not an autoimmune disease because it occurs when the immune system responds to foreign blood cells, not to the body's own cells. Choices A, B, and C (Multiple sclerosis, Pernicious anemia, Goodpasture syndrome) are autoimmune diseases where the immune system mistakenly attacks the body's own tissues or organs.
2. In which of the following cases is dehydration more likely to occur?
- A. A 50-year-old woman who is a bodybuilder
- B. A 50-year-old man who is morbidly obese
- C. A 10-year-old child who is thin
- D. A 30-year-old with multiple sclerosis
Correct answer: B
Rationale: Dehydration is more likely to occur in a 50-year-old man who is morbidly obese due to the increased risk of conditions like diabetes and heart disease that can lead to fluid imbalances. Being morbidly obese can also strain the body's systems, increasing the need for water. The other choices are less likely to experience dehydration as a primary concern. While being a bodybuilder may require strict hydration practices, dehydration is more prevalent in individuals with conditions like obesity.
3. In osteoporosis, what is the expected therapeutic action of raloxifene (Evista)?
- A. It decreases bone resorption and increases bone density.
- B. It stimulates the formation of new bone.
- C. It increases calcium absorption in the intestines.
- D. It decreases the excretion of calcium through the kidneys.
Correct answer: A
Rationale: The correct answer is A. Raloxifene works by decreasing bone resorption and increasing bone density. This helps in strengthening bones, reducing the risk of fractures, and improving bone health in patients with osteoporosis. Choice B is incorrect because raloxifene does not directly stimulate the formation of new bone but rather prevents bone loss. Choice C is incorrect as raloxifene does not primarily affect calcium absorption in the intestines. Choice D is also incorrect as raloxifene does not primarily decrease the excretion of calcium through the kidneys.
4. A patient is starting on atorvastatin (Lipitor) for hyperlipidemia. What critical instruction should the nurse provide?
- A. Take the medication at night to reduce the risk of muscle pain and other side effects.
- B. Avoid consuming grapefruit juice while taking this medication.
- C. Take the medication in the morning with breakfast to improve absorption.
- D. Take the medication with a high-fat meal to increase its effectiveness.
Correct answer: A
Rationale: The correct answer is to take the medication at night to reduce the risk of muscle pain and other side effects. Atorvastatin, like other statins, is more effective when taken in the evening as the body produces more cholesterol at night. Taking it with a high-fat meal (choice D) is not recommended as it may reduce the drug's absorption. Grapefruit juice (choice B) should be avoided with atorvastatin as it can increase the risk of side effects. Taking the medication in the morning with breakfast (choice C) is not as effective as taking it at night.
5. Which patient is most likely to be diagnosed with complex regional pain syndrome II (CRPS II)?
- A. A patient who has experienced a spinal cord injury and reports severe, burning pain in his legs.
- B. A patient who reports severe pain in her hand following a surgery for carpal tunnel syndrome.
- C. A patient who develops pain in his foot following a fracture and immobilization with a cast.
- D. A patient who experiences chronic pain and swelling in his arm following a brachial plexus injury.
Correct answer: D
Rationale: Complex regional pain syndrome II (CRPS II) typically occurs after an injury to a peripheral nerve. In this case, a brachial plexus injury involves damage to the nerves that control muscles in the arm and hand, leading to chronic pain and swelling. Choices A, B, and C describe pain related to other conditions such as spinal cord injury, carpal tunnel surgery, and fracture immobilization, which are not typically associated with CRPS II.
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