Correct Answer: D

Rationale: Multiple myeloma is a type of cancer that involves the malignant proliferation of plasma cells, which are a type of white blood cell that produces antibodies. In multiple myeloma, these abnormal plasma cells accumulate in the bone marrow, where they interfere with the production of normal blood cells and lead to the formation of tumors in the bones. This can cause bone pain, fractures, anemia, and impaired immune function. The excessive production of abnormal antibodies can also result in kidney damage and other systemic complications.

Correct Answer: B

Rationale: Before any invasive procedure, such as placing a catheter to deliver chemotherapy beads into a liver tumor, it is essential to ensure that informed consent has been obtained from the client. This is a legal and ethical requirement that ensures the client understands the procedure, its risks, benefits, and alternatives. Ensuring that the signed consent is on the chart is the most important action the nurse can take before the procedure, as the procedure cannot legally proceed without it.

Correct Answer: A

Rationale: Fatigue and weakness are common side effects of radiation therapy, often due to the body's response to radiation damage and the energy required to repair both cancerous and healthy cells affected by the treatment. Reassuring the patient that these symptoms are expected while also emphasizing ongoing monitoring (through lab and x-ray studies) provides both comfort and a sense of proactive care. It ensures the patient that their symptoms are being addressed in a safe and medically appropriate way.

Correct Answer: A

Rationale: While hair loss (alopecia) is a common side effect of chemotherapy due to the damage to rapidly dividing hair follicle cells, the statement that hair will grow back "immediately" is inaccurate and misleading. Hair regrowth after chemotherapy takes time, typically starting a few weeks to months after treatment ends. The new hair may also have a different texture or color initially. Therefore, this statement indicates a lack of understanding and could give the patient unrealistic expectations, which is why it shows incompetence.

Correct Answer: C

Rationale: In multiple myeloma, the malignant proliferation of plasma cells within the bone marrow leads to the secretion of osteoclast-activating factors, which increase the breakdown of bone tissue (osteolysis). This results in decreased bone density, osteoporosis, and osteolytic lesions, making bones fragile and more prone to pathologic fractures. Patients with multiple myeloma are at high risk for fractures even with minimal trauma due to the weakened bone structure, which is why Risk for Injury is a key diagnosis.