ATI Oncology Questions

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: B

Rationale: Contact inhibition is a regulatory mechanism that prevents cells from proliferating once they reach a certain density. Normally, when cells grow and touch each other (such as in a monolayer), they stop dividing, maintaining tissue integrity and structure. When contact inhibition is lacking, as in many cancerous cells, cells continue to grow and divide uncontrollably, leading to tumor formation. This loss of regulation is a hallmark of cancerous growth.

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.

Correct Answer: B

Rationale: For patients undergoing consolidation therapy for leukemia, severe fatigue is a common side effect of treatment due to factors such as anemia, decreased nutritional intake, and the body's response to chemotherapy. While exercise is beneficial, the patient's fatigue may limit their ability to engage in strenuous activity. Assisting the patient to sit in a chair during awake times is a practical way to encourage some physical activity while respecting their fatigue levels. This intervention helps prevent complications associated with immobility, such as muscle atrophy and venous stasis, without overwhelming the patient. It allows the patient to engage in light activity that is manageable and promotes recovery.

Correct Answer: B

Rationale: A platelet count of 9800/mm� indicates severe thrombocytopenia, placing the client at high risk for bleeding, even with minor trauma or injury. Instructing the client to call for help before getting out of bed ensures they receive assistance with mobility, which reduces the risk of falls or injuries that could lead to serious bleeding. Preventing any activity that could result in trauma is crucial when managing clients with very low platelet counts.