A nurse is teaching a client about what to expect during a bone marrow biopsy. Which statement by the nurse accurately describes the procedure?

Correct Answer: B

Rationale: The correct answer is B. During a bone marrow biopsy, a needle is inserted into the bone to extract a sample. The client may experience a crunching sound or scraping sensation as the needle punctures the bone due to the nature of the procedure. This is because the bone is a hard structure, and the needle has to penetrate it to collect the sample. Choice A is incorrect because a bone marrow biopsy involves extracting a solid tissue sample, not fluid. Choice C is incorrect as additional people are not typically prohibited during the procedure, but proper sterile techniques are followed. Choice D is incorrect because sedation may or may not be given, and the client may still be aware of some sensations during the procedure.

Correct Answer: C

Rationale: Step-by-step rationale: 1. Hydroxyurea inhibits ribonucleotide reductase, leading to decreased DNA synthesis. 2. This action is used in treating conditions like sickle cell anemia, where inhibiting DNA synthesis decreases RBC production. 3. Choice A is incorrect as hydroxyurea actually increases nitric oxide levels. 4. Choice B is incorrect as hydroxyurea decreases WBC production, including neutrophils and monocytes. 5. Choice D is incorrect as hydroxyurea does not increase RBC lifespan but instead decreases RBC production.

Correct Answer: B

Rationale: Step-by-step rationale: 1. Aplastic anemia is a rare disorder characterized by bone marrow failure. 2. While some drugs can cause bone marrow suppression, the mentioned drugs are not typically associated with aplastic anemia. 3. Lithium is linked to neutropenia, acetazolamide to aplastic anemia in rare cases, and aspirin to thrombocytopenia, not aplastic anemia. 4. Therefore, the correct answer is B: FALSE. Summary: - Choice A is incorrect because the drugs listed do not commonly induce aplastic anemia. - Choice C is incorrect as there is limited evidence supporting these drugs as common causes. - Choice D is incorrect as aplastic anemia induced by these drugs is not considered rare.

Correct Answer: B

Rationale: The correct answer is B: Chemotherapy. In Rai stage II of chronic lymphocytic leukemia (CLL), chemotherapy is the conventional treatment to reduce cancer cells and prevent progression. Antibiotics (choice A) are not the primary treatment for CLL. Antivirals (choice C) are used for viral infections, not CLL. Rest (choice D) alone is not sufficient to treat CLL and may lead to disease progression. Chemotherapy targets cancer cells, making it the appropriate treatment for Rai stage II CLL.

Correct Answer: A

Rationale: The correct answer is A: 70% alcohol or lens cleaner. Alcohol is recommended as it effectively removes oil without damaging the lens. Step 1: Apply alcohol on a clean cloth. Step 2: Gently wipe the lens in a circular motion. Alcohol evaporates quickly, leaving no residue. Xylene (B) is too harsh and can damage the lens. Water (C) can cause streaks and not effectively remove oil. Benzene (D) is toxic and should never be used on optical lenses.