in which disorder does a staphylococcus aureus organism produce a toxin leading to exfoliation and large blister formation
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Nursing Elites

ATI RN

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?

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. When starting on oral contraceptives, what key point should the nurse emphasize about taking the medication consistently?

Correct answer: A

Rationale: When starting on oral contraceptives, it is crucial to take them at the same time each day to maintain stable hormone levels and ensure their effectiveness in preventing pregnancy. Choice B is incorrect because consistency in timing is essential to maximize contraceptive efficacy. Choice C is incorrect as there is no evidence that taking oral contraceptives in the morning helps avoid nighttime side effects. Choice D is incorrect because oral contraceptives do not provide immediate effectiveness and require consistent use to prevent pregnancy.

3. Prior to administering iodoquinol (Yodoxin), what assessment should the nurse make?

Correct answer: A

Rationale: Before administering iodoquinol (Yodoxin), the nurse should assess for allergy to iodine since iodoquinol is a medication containing iodine. Assessing for skin eruptions (choice C) and ophthalmic symptoms (choice D) are not specifically related to iodoquinol administration. Noting the time the patient last ate (choice B) may be relevant for certain medications but is not directly related to assessing for an allergy to iodine in this case.

4. What causes the appearance of a barrel chest in clients with emphysema?

Correct answer: C

Rationale: The correct answer is C: Air trapping in the alveoli. A barrel chest in emphysema results from the hyperinflation of the lungs due to air trapping in the alveoli. This leads to increased anteroposterior diameter of the chest. Choices A, B, and D are incorrect. Peripheral edema is swelling caused by fluid retention in tissues, not associated with a barrel chest in emphysema. Bacterial infections in the lungs can lead to conditions like pneumonia but do not directly cause a barrel chest. Muscle atrophy of the diaphragm could affect breathing mechanics but is not specifically linked to the development of a barrel chest in emphysema.

5. A patient with a history of cardiovascular disease is being prescribed hormone replacement therapy (HRT). What should the nurse include in the patient education regarding the risks associated with HRT?

Correct answer: A

Rationale: The correct answer is A. Hormone replacement therapy (HRT) is associated with an increased risk of cardiovascular events, including heart attack and stroke, especially in patients with a history of cardiovascular disease. Choice B is incorrect because HRT does not decrease the risk of osteoporosis; in fact, it may increase the risk of certain conditions like venous thromboembolism, as mentioned in choice C. Choice D is also incorrect as HRT has been associated with a slight increase in the risk of breast cancer.

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