Correct Answer: B

Rationale: The correct answer is B: Fluorouracil (5-fluorouracil, 5-FU). Fluorouracil is a commonly used chemotherapy drug for treating advanced liver cancer. It works by inhibiting the growth of cancer cells. This drug is specifically effective in targeting rapidly dividing cells, which is a characteristic of cancer cells. Fluorouracil is often used in combination with other chemotherapy drugs to improve treatment outcomes. Summary of other choices: A: Fluoxymesterone (Halotestin) - This is an androgen hormone used to treat certain types of breast cancer, not liver cancer. C: Tamoxifen (Nolvadex) - This is a hormonal therapy drug used in breast cancer, not liver cancer. D: Megestrol (Megace) - This is a hormonal therapy drug used for certain types of cancers, but not typically for liver cancer.

Correct Answer: B

Rationale: The correct answer is B: Offering emotional support. In the preoperative phase, a nurse's role includes comforting and reassuring the patient to reduce anxiety and promote emotional well-being. This is crucial for the patient's overall experience and can positively impact their recovery. Obtaining preoperative orders (A) is typically the responsibility of the physician. Explaining the surgical procedure (C) is usually done by the surgeon. Providing informed consent (D) involves ensuring the patient understands the risks and benefits of the procedure, which is typically the responsibility of the healthcare provider performing the procedure.

Correct Answer: B

Rationale: The correct answer is B: Chlamydia collection kit. The primary care provider will need the collection kit to gather a sample for testing. A Chlamydia slide (A) is not necessary as the provider needs to collect a sample first. A Chlamydia swab (C) is used to collect the sample, not to provide to the provider. A Chlamydia wet mount (D) is not appropriate for Chlamydia testing, as it is typically used for other types of infections.

Correct Answer: A

Rationale: The correct answer is A because cathartics can exacerbate ulcerative colitis symptoms by increasing bowel motility and causing further inflammation. Giving an oil retention enema (choice B) is not necessary for a barium enema. Ingesting radiopaque tablets (choice C) is not typically part of the preparation for a barium enema. Positioning the patient in a high Fowler's position (choice D) is not a specific requirement following the procedure. Overall, avoiding cathartics is crucial in patients with acute ulcerative colitis to prevent worsening of symptoms during the barium enema.

Correct Answer: D

Rationale: The correct answer is D: Whole grains and meats. Zinc is mainly found in animal-based foods like meats and seafood. Meats, particularly red meats, are rich sources of zinc. Whole grains like wheat, rice, and oats also contain zinc. Legumes (Choice C) are sources of other minerals but not high in zinc. Fruits and vegetables (Choices A and B) are not significant sources of zinc. The correct answer provides the best options for the cancer patient to obtain an adequate amount of zinc for recovery.