Nursing Elites

1. After ingestion of cysts, how long does it take for the symptoms of giardiasis to develop?

• A. 12 to 24 hours
• B. 3 to 5 days
• C. 1 to 2 weeks
• D. 2 to 3 months

Correct answer: B

Rationale: Giardiasis symptoms typically develop 3 to 5 days after ingestion of the cysts. This timeframe aligns with the incubation period of the Giardia parasite. Choice A (12 to 24 hours) is too short for giardiasis to manifest. Choice C (1 to 2 weeks) and choice D (2 to 3 months) represent durations that are not consistent with the usual onset of symptoms in giardiasis.

2. In discussing sex hormone production with the patient, the nurse should describe that testosterone is normally secreted in response to

• A. sexual arousal.
• B. stimulation by luteinizing hormone.
• C. ACTH release by the adrenal cortex.
• D. decreased cortisol levels.

Correct answer: B

Rationale: Testosterone production is regulated by the hypothalamic-pituitary-gonadal axis. Luteinizing hormone (LH) stimulates the Leydig cells in the testes to produce testosterone. Therefore, the correct answer is B. Choice A, 'sexual arousal,' is incorrect because testosterone secretion is not directly linked to arousal but rather to hormonal stimulation. Choice C, 'ACTH release by the adrenal cortex,' is incorrect as testosterone production is not primarily regulated by adrenocorticotropic hormone (ACTH). Choice D, 'decreased cortisol levels,' is also incorrect as cortisol and testosterone are regulated by separate endocrine pathways.

3. A nurse recalls an example of an immune-complex-mediated disease is:

• A. Bronchial asthma
• B. Contact dermatitis
• C. Serum sickness
• D. Rheumatoid arthritis

Correct answer: C

Rationale: The correct answer is C: Serum sickness. Serum sickness is characterized by the formation of immune complexes in response to certain medications or proteins. These immune complexes can deposit in tissues, leading to inflammation and tissue damage. Bronchial asthma (Choice A) is a chronic inflammatory condition of the airways not primarily mediated by immune complexes. Contact dermatitis (Choice B) is a type IV hypersensitivity reaction mediated by T cells, not immune complexes. Rheumatoid arthritis (Choice D) is an autoimmune disease where antibodies target self-antigens, but it is not primarily mediated by immune complexes.

4. A 69-year-old female patient has been diagnosed with malignant melanoma. The care team has collaborated with the patient and her family and agreed on a plan of care that includes administration of interferon alfa-2b. After administering interferon alfa-2b, the oncology nurse should anticipate that the patient may develop which of the following adverse effects?

• A. Profound diaphoresis
• B. Decreased level of consciousness
• C. Flu-like symptoms
• D. Cyanosis and pallor

Correct answer: C

Rationale: After the administration of interferon alfa-2b, the patient may develop flu-like symptoms as an adverse effect. Flu-like symptoms are commonly associated with interferon therapy, including fever, chills, fatigue, and muscle aches. These symptoms usually subside over time. Options A, B, and D are not typically associated with interferon alfa-2b administration. Profound diaphoresis is excessive sweating, decreased level of consciousness indicates neurological issues, and cyanosis and pallor suggest circulatory or respiratory problems, none of which are expected adverse effects of interferon alfa-2b.

5. What causes atherosclerotic plaques to form in the body?

• A. Poor dietary habits
• B. Administration of statin medication
• C. Interruption of blood flow to the brain
• D. Injury to the endothelium of the coronary arteries

Correct answer: D

Rationale: Atherosclerotic plaques form in the body due to injury to the endothelium of the coronary arteries. When the endothelium is damaged, it triggers an inflammatory response that leads to the accumulation of fats, cholesterol, and other substances, forming plaques. These plaques can narrow the arteries, reducing blood flow and potentially leading to serious complications like heart attacks or strokes. Poor dietary habits (choice A) can contribute to the development of atherosclerosis by promoting the buildup of plaque-forming substances in the blood, but the direct cause is the injury to the endothelium. Administration of statin medication (choice B) is actually a treatment for high cholesterol and aims to reduce the risk of plaque formation. Interruption of blood flow to the brain (choice C) is more related to conditions like ischemic stroke rather than the primary cause of atherosclerotic plaque formation.

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