Correct Answer: B

Rationale: The correct answer is B: 7 to 14 days. Marrow suppression from floxuridine typically occurs 1-2 weeks after administration due to its effects on rapidly dividing cells in the bone marrow. This is known as the nadir period. Choices A, C, and D are incorrect because 24 hours is too soon for noticeable effects, 2 to 4 days is too short for the nadir period, and 21 to 28 days is too long for the onset of marrow suppression. The correct choice aligns with the expected timeframe for floxuridine's impact on bone marrow function.

Correct Answer: B

Rationale: The correct answer is B because a fixed nodular mass with dimpling of the overlying skin is a classic sign of breast cancer. This finding is concerning as it indicates an abnormal growth that has invaded surrounding tissues. Dimpling occurs due to fibrotic changes pulling on the skin. Choices A, C, and D are incorrect. A slight asymmetry of the breasts is common and not necessarily indicative of cancer. Bloody discharge from the nipple can be a sign of other conditions like intraductal papilloma. Multiple firm, round, freely movable masses that change with the menstrual cycle are likely benign fibrocystic changes.

Correct Answer: B

Rationale: The correct answer is B: Use a soft toothbrush and electric razor. Patients with bone marrow depression are at increased risk of bleeding due to low platelet count. Using a soft toothbrush and electric razor helps prevent injury to the gums and skin, reducing the risk of bleeding. Choices A, C, and D are incorrect because: A: Sleeping with the head of the bed slightly elevated is not directly related to preventing bleeding in bone marrow depression. C: Drinking citrus juices may irritate the stomach lining and are not specifically indicated for preventing bleeding. D: Increasing activity level and frequent ambulation may increase the risk of injury and bleeding in a patient with bone marrow depression.

Correct Answer: D

Rationale: The correct answer is D. Carbogen is a gas mixture of carbon dioxide and oxygen. Inhaling carbogen can stimulate respiration due to increased oxygen levels and carbon dioxide acting as a respiratory stimulant. It can also dilate blood vessels, enhancing oxygen delivery to tissues. Additionally, carbogen can help dislodge blood clots by improving blood flow and oxygenation. Therefore, all the choices (A, B, and C) are correct as inhaling carbogen can have multiple beneficial effects on respiration, blood vessels, and blood clot dislodging.

Correct Answer: B

Rationale: The correct answer is B: The need to feel good about oneself. This is the priority because the resident's refusal to eat is tied to her desire to maintain her personal appearance and feel good about herself. By addressing this need first, the resident may become more willing to eat. The other choices are incorrect because while nutrition (A) is important, addressing the resident's self-esteem and well-being should come first. The need to live in a safe environment (C) is also important but not the priority in this specific scenario. The need for love from others (D) is significant but not directly related to the resident's refusal to eat based on her personal grooming preferences.