A client was admitted with iron deficiency anemia and blood-streaked emesis. Which question is most appropriate for the nurse to ask in determining the extent of the client's activity intolerance?

Correct Answer: A

Rationale: The correct answer is A. By asking the client what activities they were able to do 6 months ago compared to the present, the nurse can assess the decline in the client's activity level over time, providing valuable information on the extent of activity intolerance. This question helps establish a baseline and track changes in the client's functional status. Choice B is incorrect as it focuses on the duration of the problem rather than the client's current activity tolerance. Choice C does not directly address the client's activity level but rather their ability to keep up with usual activities. Choice D is also incorrect as it only asks about tiredness and does not provide a direct comparison of the client's activity level over time.

Correct Answer: B

Rationale: The correct answer is B: Ferritin. Ferritin is the major metabolically available storage form of iron in the body. It stores excess iron in a soluble and non-toxic form, releasing it when needed for various physiological functions. Rationale: 1. Ferritin is a protein that binds and stores iron within its structure. 2. It helps regulate the levels of iron in the body by storing excess iron and releasing it when needed. 3. Hemosiderin is an insoluble form of iron storage, not readily available for metabolism. 4. Transferrin is a transport protein that carries iron in the blood, not a storage form. 5. Hemoglobin is a protein in red blood cells that carries oxygen, not a storage form of iron. Summary: Ferritin is the correct answer as it is the primary metabolically available storage form of iron, while the other choices are incorrect as they do not serve as major storage forms of iron in the body.

Correct Answer: A

Rationale: Step-by-step rationale: 1. Hydroxyurea inhibits the enzyme xanthine oxidase, reducing the conversion of xanthine to uric acid. 2. This leads to decreased production of uric acid, resulting in lower serum uric acid levels. 3. Therefore, the statement that hydroxyurea increases serum uric acid levels is FALSE. 4. Choices B, C, and D are incorrect as they do not align with the pharmacological mechanism of hydroxyurea in reducing uric acid levels.

Correct Answer: D

Rationale: The correct answer is D: Pulmonary embolism. A pulmonary embolism occurs when a blood clot from another part of the body, typically the legs (DVT), travels to the lungs and blocks a pulmonary artery. This can be fatal if not promptly treated. Thromboembolism (A) is a general term for blood clots that travel in the bloodstream. DVT (B) specifically refers to a blood clot in a deep vein, often in the legs. PAD (C) stands for peripheral artery disease, which is caused by atherosclerosis and results in reduced blood flow to the extremities, but it does not typically lead to fatal clot formation in the circulation like a pulmonary embolism does.

Correct Answer: A

Rationale: The correct answer is A: TRUE. PCR amplifies DNA, making it sensitive enough to detect low numbers of neoplastic cells, even in patients with reduced cell counts due to treatment. This can help in early detection of relapse. Choice B is incorrect because PCR can indeed improve sensitivity in such cases. Choice C is incorrect as PCR consistently enhances sensitivity. Choice D is incorrect as PCR can be used in both remission and relapse scenarios.