A 17-year-old boy is admitted in sickle cell crisis. Which of the ff. events most likely contributed to the onset of the crisis?

Correct Answer: C

Rationale: Walking home in a cold rain can trigger a sickle cell crisis in individuals with sickle cell disease. Exposure to cold temperatures or getting wet can lead to vasoconstriction, causing the blood vessels to narrow and slow down blood flow. This reduced blood flow can increase the likelihood of sickle cells sticking together and blocking blood vessels, leading to pain and tissue damage characteristic of a sickle cell crisis. It is essential for individuals with sickle cell disease to avoid exposure to extreme temperatures, including cold rain, to prevent the onset of a crisis.

Correct Answer: B

Rationale: The nurse's best response is, "The medication blocks reverse transcriptase, the enzyme required for HIV replication." This response provides the client with a clear and accurate explanation of how zidovudine (AZT) works. AZT is a nucleoside reverse transcriptase inhibitor (NRTI) that works by blocking the activity of reverse transcriptase, an enzyme needed for HIV replication. By inhibiting this enzyme, AZT helps to slow down the replication of the virus, reducing the viral load in the body and slowing the progression of the disease. It is important for the client to understand that while AZT can help manage HIV/AIDS, it is not a cure and will not completely eliminate the infection.

Correct Answer: B

Rationale: Clients with multiple myeloma are at increased risk for pathologic bone fractures due to the disease's effects on bone tissue. Multiple myeloma is a cancer of plasma cells, a type of white blood cell found in the bone marrow. The growth of abnormal plasma cells weakens the bone structure, leading to bone lesions and an increased risk of fractures. The bone lesions can cause pain, bone deformities, and complications such as hypercalcemia. Therefore, nurses caring for clients with multiple myeloma should prioritize interventions to prevent pathologic bone fractures and manage bone health.

Correct Answer: C

Rationale: Administering metoclopramide (Reglan) and dexamethasone (Decadron) as prescribed should be the highest priority intervention for a client experiencing nausea and vomiting after cancer chemotherapy. Metoclopramide is a commonly used antiemetic medication that helps to reduce nausea and vomiting by enhancing gastric emptying and decreasing nausea. Dexamethasone, a corticosteroid, can also help alleviate inflammation that may contribute to the nausea and vomiting. By administering these medications as prescribed, the nurse can effectively address the client's symptoms and improve their comfort level. The other options, such as serving small portions bland food, encouraging rhythmic breathing exercises, and withholding fluids, are important interventions but should not take precedence over providing the prescribed antiemetic medications to manage the client's post-chemotherapy symptoms.

Correct Answer: D

Rationale: Papillary carcinoma is the most common form of thyroid cancer in adults, accounting for approximately 80% of all thyroid cancers. It typically affects individuals in their 30s and 40s and has an excellent prognosis with high survival rates, especially when detected early. Papillary carcinoma arises from the follicular cells of the thyroid gland and is known for its characteristic papillary growth pattern. It often presents as a painless thyroid nodule and may be associated with a history of radiation exposure. Treatment usually involves surgery to remove the thyroid gland (thyroidectomy) followed by radioactive iodine therapy and thyroid hormone replacement.