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MSN 570 Advanced Pathophysiology Final 2024
1. In which disorder does a Staphylococcus aureus organism produce a toxin leading to exfoliation and large blister formation?
- A. Herpes simplex I virus
- B. Herpes simplex II virus
- C. Necrotizing fasciitis
- D. Cellulitis
Correct answer: B
Rationale: The correct answer is 'Herpes simplex I virus.' This disorder is known as Staphylococcal scalded skin syndrome (SSSS), where a Staphylococcus aureus organism produces an exfoliative toxin leading to skin exfoliation and large blister formation. Choices B, C, and D are incorrect. Herpes simplex viruses (I and II) cause different types of skin lesions and do not lead to exfoliation and blister formation. Necrotizing fasciitis is a severe soft tissue infection, while cellulitis is a bacterial skin infection that does not typically involve exfoliation and blister formation like in SSSS.
2. What does a client's symptoms of headache, vomiting, blurred vision, and loss of consciousness following a concussion indicate?
- A. Increased intracranial pressure
- B. Lower extremity compartment syndrome
- C. Consuming too much food at once
- D. Improved kidney function
Correct answer: A
Rationale: The symptoms of headache, vomiting, blurred vision, and loss of consciousness following a concussion are indicative of increased intracranial pressure. These symptoms suggest a serious condition that can occur after head trauma, requiring immediate medical attention. Lower extremity compartment syndrome presents with symptoms related to pressure build-up in the muscles of the legs, not the head. Consuming too much food at once does not manifest with these neurological symptoms. Improved kidney function would not present with symptoms such as headache, vomiting, blurred vision, and loss of consciousness.
3. What function does aldosterone serve in the body?
- A. Aldosterone causes a release of sodium from the body, decreases fluid volume, and decreases blood pressure
- B. Aldosterone causes a retention of sodium in the body, increases fluid volume, and increases blood pressure
- C. Aldosterone causes a release of sodium from the body, increases fluid volume, and decreases blood pressure
- D. Aldosterone enhances intracellular sodium production and lowers blood pressure
Correct answer: B
Rationale: Aldosterone functions by causing the retention of sodium in the body, which results in an increase in fluid volume and blood pressure. Choice A is incorrect because aldosterone actually promotes sodium retention rather than release. Choice C is incorrect as it states that aldosterone decreases fluid volume, which is not accurate. Choice D is incorrect because aldosterone does not enhance intracellular sodium production; instead, it primarily acts on sodium reabsorption in the kidneys.
4. A female patient is taking combined hormonal contraceptives to prevent pregnancy. She visits the gynecology clinic and is noted to have a blood pressure of 176/102 mm Hg. The patient is started on enalapril mesylate 10 mg. In collaboration with the primary care provider, what other patient teaching should be provided based on her current medication regimen?
- A. Instruct on a low-salt diet.
- B. Instruct to discontinue the contraceptives.
- C. Instruct on the use of relaxation techniques to decrease stress.
- D. Instruct on the rationale for increasing the contraceptive dose.
Correct answer: A
Rationale: Women on hormonal contraceptives and antihypertensives like enalapril should be counseled to adopt a low-salt diet if severe hypertension occurs. This dietary modification can help in managing blood pressure levels. Instructing to discontinue the contraceptives is crucial in cases of severe hypertension as it poses an increased risk of cardiovascular events. Instructing on relaxation techniques may have some benefits in reducing stress levels but addressing the root cause, such as discontinuing contraceptives in this scenario, is more critical. There is no rationale for increasing the contraceptive dose when hypertension is present; in fact, it should be stopped to prevent complications.
5. A male patient is receiving testosterone therapy for hypogonadism. What serious adverse effect should the nurse monitor for during this therapy?
- A. Increased risk of liver dysfunction
- B. Increased risk of prostate cancer
- C. Increased risk of bone fractures
- D. Increased risk of breast cancer
Correct answer: A
Rationale: The correct answer is A: Increased risk of liver dysfunction. Testosterone therapy can lead to liver dysfunction, including cholestatic jaundice and hepatitis. This adverse effect necessitates monitoring of liver function tests during testosterone therapy. Choice B, increased risk of prostate cancer, is incorrect because testosterone therapy does not cause prostate cancer but is contraindicated in patients with known or suspected prostate cancer. Choice C, increased risk of bone fractures, is incorrect as testosterone therapy is actually associated with an increase in bone mineral density, reducing the risk of fractures. Choice D, increased risk of breast cancer, is incorrect because testosterone therapy in males does not increase the risk of breast cancer.
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