ATI RN
Pathophysiology Final Exam
1. A nurse is teaching a class about immune deficiencies, and a person from the audience asks which cells are affected by severe combined immune deficiency (SCID) syndrome, and the nurse answers:
- A. B cell deficits
- B. T cell deficits
- C. Complement deficits
- D. B and T cell deficits
Correct answer: D
Rationale: The correct answer is D: B and T cell deficits. Severe combined immune deficiency (SCID) syndrome affects both B and T cells, leading to a severe impairment in the immune system's ability to fight infections. Choice A (B cell deficits) is incorrect because SCID affects not only B cells but also T cells. Choice B (T cell deficits) is incorrect as SCID is characterized by deficits in both B and T cells. Choice C (Complement deficits) is incorrect as SCID primarily involves B and T cell deficiencies rather than complement deficiencies.
2. During a follow-up visit, a patient being treated for latent tuberculosis mentions inconsistent drug intake. What should subsequent health education focus on?
- A. The importance of adhering to the treatment regimen to reduce adverse effects
- B. The necessity of consistently taking the prescribed drugs for TB cure
- C. Matching drug dosages carefully to signs and symptoms
- D. The consequence of nonadherence leading to antiretroviral use
Correct answer: B
Rationale: The correct answer is B because consistent intake of prescribed drugs is crucial for curing tuberculosis. By emphasizing the necessity of following the treatment plan, the patient is more likely to achieve a successful outcome. Choice A is incorrect because it focuses on the risk of adverse effects rather than the primary goal of TB cure. Choice C is incorrect as it does not address the issue of inconsistent drug intake. Choice D is also incorrect as it introduces a different treatment (antiretrovirals) not relevant to latent tuberculosis.
3. Cushing syndrome is characterized by which disorder?
- A. Hypocortisolism
- B. Exophthalmos
- C. Hypercortisolism
- D. Hyperpigmentation
Correct answer: C
Rationale: Cushing syndrome is characterized by hypercortisolism, which is an excessive amount of cortisol in the body. Choice A, 'Hypocortisolism,' is incorrect as Cushing syndrome is associated with elevated cortisol levels. Choice B, 'Exophthalmos,' refers to bulging eyes and is not a characteristic feature of Cushing syndrome. Hyperpigmentation, as mentioned in choice D, can be present in Cushing syndrome due to increased ACTH levels stimulating melanocytes, but it is not the defining characteristic of the syndrome.
4. A 5-month-old child is admitted to the hospital with recurring respiratory infections. A possible cause of this condition is:
- A. Hypergammaglobulinemia
- B. Increased maternal IgG
- C. Immune insufficiency
- D. Decreased maternal antibody breakdown, resulting in hyposensitivity
Correct answer: C
Rationale: Immune insufficiency is a possible cause of recurring respiratory infections in a 5-month-old child. In this scenario, the child's immune system may not be functioning optimally, leading to a susceptibility to infections. Choices A, B, and D are incorrect. Hypergammaglobulinemia refers to high levels of gamma globulins in the blood and is not typically associated with recurring respiratory infections in this context. Increased maternal IgG would provide passive immunity to the child, offering some protection against infections. Decreased maternal antibody breakdown leading to hyposensitivity is not a common cause of recurring respiratory infections in a 5-month-old child.
5. What important information should the nurse provide about the risks associated with tamoxifen (Nolvadex) for a patient with a history of breast cancer?
- 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 correct answer is A: Tamoxifen may increase the risk of venous thromboembolism. Patients on tamoxifen should be educated about the signs and symptoms of blood clots. Choices B, C, and D are incorrect. Tamoxifen does not decrease the risk of osteoporosis; it may cause hot flashes and other menopausal symptoms, and it may cause weight gain and fluid retention.
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