ATI RN
Pathophysiology Practice Exam
1. Ivermectin (Stromectol) appears on a list of a patient's recent medications. The nurse who is reviewing the medications is justified in suspecting that the patient may have been receiving treatment for a parasitic infection with
- A. Entamoeba histolytica.
- B. Giardia lamblia.
- C. Strongyloides stercoralis.
- D. Plasmodium falciparum.
Correct answer: C
Rationale: Ivermectin (Stromectol) is commonly used to treat parasitic infections, particularly Strongyloides stercoralis. This parasitic infection is known to respond well to Ivermectin therapy. Entamoeba histolytica causes amoebiasis and is typically treated with antiprotozoal drugs like metronidazole, not Ivermectin. Giardia lamblia is a protozoan parasite causing giardiasis, which is usually treated with medications like metronidazole or tinidazole, not Ivermectin. Plasmodium falciparum is a malaria-causing parasite and is not treated with Ivermectin but with antimalarial medications like chloroquine or artemisinin-based combination therapies.
2. A male patient with erectile dysfunction is prescribed sildenafil (Viagra). What specific instruction should the nurse provide to ensure the safe use of this medication?
- A. Take the medication with food to prevent nausea.
- B. Avoid taking nitrates while on this medication.
- C. Take the medication at bedtime to ensure absorption during sleep.
- D. Take the medication with milk to enhance absorption.
Correct answer: B
Rationale: The correct instruction the nurse should provide is to avoid taking nitrates while on sildenafil (Viagra). Combining sildenafil with nitrates can result in severe hypotension due to additive vasodilatory effects. Choice A is incorrect because sildenafil can be taken with or without food. Choice C is incorrect as there is no specific requirement to take sildenafil at bedtime. Choice D is incorrect as taking sildenafil with milk has not been shown to enhance its absorption.
3. A male patient receiving androgen therapy is concerned about side effects. What is the most serious adverse effect the nurse should monitor for during this therapy?
- A. Increased risk of cardiovascular events
- B. Increased risk of bone fractures
- C. Increased risk of venous thromboembolism
- D. Increased risk of mood changes
Correct answer: A
Rationale: The correct answer is A: Increased risk of cardiovascular events. Androgen therapy can significantly increase the risk of cardiovascular events, such as heart attack and stroke, especially in older patients. Monitoring for signs and symptoms of cardiovascular issues is crucial during this therapy. Choice B, increased risk of bone fractures, is not typically associated with androgen therapy. Choice C, increased risk of venous thromboembolism, is more commonly linked to estrogen therapy rather than androgen therapy. Choice D, increased risk of mood changes, can occur with androgen therapy but is not as serious or life-threatening as cardiovascular events.
4. A nurse is administering testosterone to a patient with hypogonadism. What outcome indicates that the treatment is having the desired effect?
- A. Increased libido
- B. Increased muscle mass
- C. Improved secondary sexual characteristics
- D. Decreased sperm count
Correct answer: C
Rationale: The correct answer is C: 'Improved secondary sexual characteristics.' Testosterone therapy in patients with hypogonadism typically leads to improved secondary sexual characteristics, which include increased muscle mass and libido. While increased libido (choice A) and increased muscle mass (choice B) are effects of testosterone therapy, they are more specific outcomes related to secondary sexual characteristics. Decreased sperm count (choice D) would not be an expected outcome of testosterone therapy for hypogonadism, as testosterone is essential for sperm production.
5. What is a critical point the nurse should include in patient education for a patient prescribed tamoxifen (Nolvadex)?
- A. Tamoxifen may increase the risk of venous thromboembolism.
- B. Tamoxifen may decrease the risk of osteoporosis.
- C. Tamoxifen may cause hot flashes and other menopausal symptoms.
- D. Tamoxifen may cause weight gain and fluid retention.
Correct answer: A
Rationale: The critical point the nurse should include in patient education for a patient prescribed tamoxifen is that it may increase the risk of venous thromboembolism. This is crucial information because tamoxifen is known to promote blood clot formation, and patients need to be aware of the signs and symptoms of blood clots to seek prompt medical attention. Choices B, C, and D are incorrect as tamoxifen is not associated with decreasing the risk of osteoporosis, causing hot flashes and other menopausal symptoms, or directly causing weight gain and fluid retention.
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