Correct Answer: B

Rationale: Induction therapy for acute myeloid leukemia (AML) involves intensive chemotherapy aimed at achieving remission by eliminating a large number of cancerous cells. However, this aggressive treatment also severely reduces the production of healthy blood cells, including neutrophils, which leads to neutropenia (a dangerously low number of neutrophils). This makes the patient highly susceptible to infections, which can be life-threatening. Monitoring for signs of infection is critical during this phase, as infections may occur quickly and progress rapidly due to the compromised immune system. Early detection and prompt treatment of infections are vital to improving patient outcomes during induction therapy.

Correct Answer: B

Rationale: Radiation therapy can cause skin irritation, dryness, and sensitivity in the treated area. Wearing loose, soft clothing helps minimize friction and pressure on the skin, reducing irritation and promoting comfort. The skin in the treated area is often more sensitive and vulnerable to damage, so this intervention helps protect the skin while maintaining the client's comfort during the course of treatment.

Correct Answer: B

Rationale: In polycythemia vera, there is an overproduction of red blood cells, white blood cells, and platelets, which leads to increased blood viscosity and a high risk for thrombosis (blood clot formation). Monitoring the platelet count is a priority because elevated platelet levels contribute significantly to the risk of developing blood clots, which can result in life-threatening complications such as strokes, heart attacks, or deep vein thrombosis (DVT). Therefore, regular monitoring of the platelet count is essential to assess the patient's risk for thrombosis and to guide treatment decisions, such as phlebotomy or medication adjustments to lower platelet levels.

Correct Answer: C

Rationale: Rituximab is a monoclonal antibody that targets CD20, a protein found on the surface of certain B-cells, including some cancerous B-cells, such as in non-Hodgkin's lymphoma and chronic lymphocytic leukemia (CLL). Rituximab works by binding to the CD20 protein, which leads to the destruction of the cancerous B-cells through various mechanisms, including preventing the initiation of cell division. By blocking the division process, rituximab helps slow the growth and proliferation of cancer cells, allowing the immune system and additional treatments to clear them more effectively.

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.