ATI Oncology Questions

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: B

Rationale: In patients with leukemia, severe fatigue is a common symptom due to factors such as anemia, the disease process itself, and the effects of treatments like chemotherapy. The most appropriate intervention is to schedule frequent rest periods to help manage fatigue while encouraging a balance between rest and activity. This approach allows the patient to conserve energy for essential tasks and prevent exhaustion, without promoting complete inactivity, which can lead to deconditioning.

Correct Answer: A

Rationale: As people age, the immune system becomes less efficient, a phenomenon known as immunosenescence. This decline in immune function includes reduced production of immune cells (such as T cells and B cells) and diminished responses to infections. During chemotherapy, which further suppresses the immune system, older clients are at a significantly higher risk of developing infections due to this age-related decrease in immune function. This is especially concerning because chemotherapy targets rapidly dividing cells, which include immune cells, making it even harder for the body to fight off infections.

Correct Answer: D

Rationale: Clients with cancer, especially those undergoing chemotherapy or other immunosuppressive treatments, are at increased risk for infections due to a weakened immune system. Changing a litter box exposes the client to pathogens such as Toxoplasma gondii and other harmful bacteria or parasites found in cat feces, which could lead to serious infections. It is recommended that immunocompromised individuals avoid activities like changing litter boxes to reduce their risk of exposure to infectious agents. A family member or caregiver should handle this task to protect the client.

Correct Answer: D

Rationale: In myelodysplastic syndrome (MDS), the bone marrow does not produce enough healthy blood cells, leading to conditions such as anemia. Administering erythropoietin is an effective intervention to manage anemia in MDS patients because it stimulates the production of red blood cells. This can help improve the patient's hemoglobin levels, reducing symptoms such as fatigue and weakness associated with anemia. Erythropoietin is commonly used in MDS to enhance red blood cell production and reduce the need for frequent blood transfusions.