ATI RN
ATI Oncology Questions
1. A client is receiving rituximab and asks how it works. What response by the nurse is best?
- A. It causes rapid lysis of the cancer cell membranes.
- B. It destroys the enzymes needed to create cancer cells.
- C. It prevents the start of cell division in the cancer cells.
- D. It sensitizes certain cancer cells to chemotherapy.
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.
2. A nurse is planning the care of a patient who has been admitted to the medical unit with a diagnosis of multiple myeloma. In the patients care plan, the nurse has identified a diagnosis of Risk for Injury. What pathophysiologic effect of multiple myeloma most contributes to this risk?
- A. Labyrinthitis
- B. Left ventricular hypertrophy
- C. Decreased bone density
- D. Hypercoagulation
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.
3. The nurse is monitoring a client for signs and symptoms related to superior vena cava syndrome. Which is an early sign of this oncological emergency?
- A. Cyanosis
- B. Arm edema
- C. Periorbital edema
- D. Mental status changes
Correct answer: C
Rationale: Superior vena cava syndrome (SVCS) occurs when the superior vena cava, the large vein that carries blood from the upper body to the heart, becomes compressed or obstructed, often by a tumor or enlarged lymph nodes, typically in cancers like lung cancer or lymphoma. The obstruction leads to increased venous pressure and reduced blood flow, resulting in swelling and edema in areas drained by the superior vena cava. Periorbital edema (swelling around the eyes) is one of the earliest signs of SVCS. This occurs because the impaired venous return causes fluid to accumulate in the soft tissues of the face, especially around the eyes. As the condition progresses, facial swelling can worsen, and other symptoms develop.
4. The healthcare professional working with oncology clients understands that which age-related change increases the older client’s susceptibility to infection during chemotherapy?
- A. Decreased immune function.
- B. Diminished nutritional stores.
- C. Existing cognitive deficits.
- D. Poor physical reserves.
Correct answer: A
Rationale: The correct answer is A: Decreased immune function. Aging leads to a decline in immune function, which increases susceptibility to infections during chemotherapy. This decline is due to changes in the immune system that occur with age. Choices B, C, and D are incorrect because while they may impact overall health in older clients, they do not directly increase susceptibility to infections during chemotherapy like decreased immune function does.
5. Which of the following statements by the oncology nurse displays understanding about antineoplastic medications?
- A. Chemotherapy is not going to spread throughout the body
- B. Chemotherapy affects the immune system
- C. Chemotherapy is specific to cancer cells only
- D. Chemotherapy makes the patient radioactive
Correct answer: B
Rationale: Chemotherapy targets rapidly dividing cells, which include both cancerous and healthy cells, such as those in the bone marrow, hair follicles, and the lining of the digestive tract. Since the bone marrow produces immune cells (white blood cells), chemotherapy can weaken the immune system by reducing the body’s ability to produce these cells, making patients more susceptible to infections. This is why close monitoring and supportive measures to protect immune function are important during chemotherapy treatment.
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