Nursing Elites

1. 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.

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

• A. Raloxifene decreases bone resorption, which helps to maintain or increase bone density.
• B. Raloxifene increases calcium absorption in the intestines, which helps build stronger bones.
• C. Raloxifene stimulates new bone formation by increasing osteoblast activity.
• D. Raloxifene decreases calcium excretion by the kidneys, helping to maintain bone density.

Correct answer: A

Rationale: Raloxifene decreases bone resorption, which helps to maintain or increase bone density, making it effective in the prevention and treatment of osteoporosis.

3. Right-sided heart failure is characterized by:

• A. Immunosuppression
• B. Pulmonary edema
• C. Peripheral edema
• D. Coughing

Correct answer: C

Rationale: Right-sided heart failure is characterized by peripheral edema, which results from the buildup of fluid in the body. This fluid accumulates in the extremities due to the heart's inability to effectively pump blood forward. Choices A, B, and D are incorrect. Immunosuppression is not a typical feature of right-sided heart failure. Pulmonary edema is more commonly associated with left-sided heart failure, where fluid accumulates in the lungs. Coughing is a symptom that can be present in various conditions but is not a defining characteristic of right-sided heart failure.

4. How does influenza immunization produce immunity?

• A. The virus from the vaccine remains in the body until the end of the season
• B. An attenuated virus causes immune system suppression and triggers immunity
• C. The body identifies the virus and develops antibodies against the virus
• D. The vaccine remains in the injection site and produces immune cells

Correct answer: C

Rationale: The correct answer is C. Influenza immunization works by introducing a weakened or inactivated form of the virus into the body, allowing the immune system to recognize it as foreign. This recognition triggers the production of antibodies specific to the virus. Choice A is incorrect as the virus in the vaccine does not remain in the body until the end of the season. Choice B is incorrect as an attenuated virus does not cause immune system suppression but rather stimulates an immune response. Choice D is incorrect because the vaccine does not stay at the injection site but rather prompts a systemic immune response throughout the body.

5. How are antibodies produced?

• A. B cells
• B. T cells
• C. Helper cells
• D. Memory cells

Correct answer: A

Rationale: Antibodies are produced by B cells. B cells are specialized white blood cells that generate antibodies as part of the immune response. B cells differentiate into plasma cells that secrete antibodies. T cells play a role in cell-mediated immunity, not antibody production. Helper cells, or helper T cells, assist in activating B cells but do not directly produce antibodies. Memory cells store information about previous infections but do not actively produce antibodies.

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