Correct Answer: D

Rationale: The correct answer is D, Erythropoietin deficiency anemia. Chronic kidney disease often leads to anemia due to decreased production of erythropoietin. This hormone, produced by the kidneys, stimulates the bone marrow to produce red blood cells. Choices A, B, and C are incorrect. Iron-deficiency anemia is characterized by low iron levels, vitamin B12 deficiency anemia by inadequate vitamin B12, and aplastic anemia by bone marrow failure.

Correct Answer: A

Rationale: The most important intervention for a client with a left nephrectomy is to assess the intravenous fluids for rate and volume. After nephrectomy, monitoring intravenous fluids is crucial to ensure proper hydration and kidney function. Changing the surgical dressing daily, monitoring medication levels, and tracking meal intake are also important aspects of care but not as critical as ensuring adequate intravenous fluid management post-surgery.

Correct Answer: D

Rationale: In situations where a client is unable to sign the consent form, obtaining a telephone consent from a family member witnessed by two healthcare providers is the appropriate action to ensure informed consent is obtained. Option A is not necessary and involves legal proceedings. Option B is not ethical as the nurse cannot sign the consent on behalf of the client. Option C is unsafe and violates the client's rights by proceeding without proper consent.

Correct Answer: D

Rationale: The correct answer is D, St. John's Wort. St. John's Wort can interact with antidepressants and oral contraceptives, potentially reducing their efficacy. Iron supplement, garlic, and green tea are not typically known to have significant interactions with antidepressants or oral contraceptives, making them less likely to impact the client's treatment.

Correct Answer: A

Rationale: The correct answer is A. Turnips, radish, and horseradish are known to cause false-positive results in a Guaiac Test, which is used to detect blood in the stool. Avoiding these foods is crucial to ensure accurate test results. Choice B is incorrect because iron preparations can interfere with the test results. Choice C is incorrect as red meat does not impact the Guaiac Test significantly. Choice D is incorrect as caffeine and dark-colored foods are not relevant to the preparation for a Guaiac Test.