primary hypercholesteremia is often a result of
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ATI RN

MSN 570 Advanced Pathophysiology Final 2024

1. What is the primary cause of primary hypercholesteremia?

Correct answer: D

Rationale: The correct answer is 'Low-density lipoprotein (LDL) receptor mutation with defects in breakdown.' Primary hypercholesteremia is mainly caused by mutations in the LDL receptor, leading to impaired clearance of LDL cholesterol from the blood. This results in high levels of LDL cholesterol in the bloodstream. Choices A, B, and C are incorrect because they do not directly relate to the primary cause of primary hypercholesteremia.

2. A patient began antiretroviral therapy several weeks ago for the treatment of HIV, and he has now presented to the clinic for a scheduled follow-up appointment. He states to the nurse, “I've been pretty good about taking all my pills on time, though it was a bit hit and miss over the holiday weekend.” How should the nurse best respond to this patient's statement?

Correct answer: C

Rationale: The correct response is to remind the patient that antiretroviral drugs are most effective when taken consistently and as prescribed. Choice A is incorrect because taking a double dose after missing a dose is not recommended, as it can lead to medication toxicity. Choice B is incorrect as it may give the impression that missing doses is acceptable, which can reduce the effectiveness of the treatment. Choice D is incorrect because while consistency is important, the focus should be on treatment effectiveness rather than side effects.

3. A 21-year-old female was recently diagnosed with iron deficiency anemia. In addition to fatigue and weakness, which of the following clinical signs and symptoms would she most likely exhibit?

Correct answer: B

Rationale: The correct answer is B: Spoon-shaped nails. In iron deficiency anemia, spoon-shaped nails (koilonychia) are a common symptom due to changes in the nail bed. This condition is known as Plummer-Vinson syndrome. While fatigue and weakness are common in iron deficiency anemia, hyperactivity (choice A) is not typically associated with this condition. Gait problems (choice C) and petechiae (choice D) are more commonly seen in other medical conditions and are not characteristic of iron deficiency anemia.

4. A patient has been prescribed sildenafil (Viagra) for erectile dysfunction. What important information should the healthcare provider provide?

Correct answer: D

Rationale: The correct answer is D. Sildenafil (Viagra) should not be taken with nitrates due to the risk of severe hypotension. Nitrates can potentiate the hypotensive effects of sildenafil, leading to a dangerous drop in blood pressure. Choice A is incorrect because sudden hearing loss is a rare but serious side effect associated with sildenafil, not a common side effect. Choice B is not the most important information related to sildenafil use. While it is generally recommended not to exceed one dose per day, the interaction with nitrates is more critical. Choice C is also important to consider as high-fat meals can delay the onset of action of sildenafil, but it is not as crucial as avoiding nitrates.

5. A patient is prescribed raloxifene (Evista) for osteoporosis. What is the primary therapeutic action of this medication?

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.

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