A nurse is conducting a health assessment for a client suspected of having leukemia. Which factor in the client's medical history should the nurse recognize as a potential risk factor for leukemia?

A) This choice is incorrect because flow cytometry analysis is not primarily used to assess the client's heart function.

B) This choice is incorrect because determining the client's blood type is not the primary purpose of flow cytometry analysis in the diagnostic evaluation of leukemia.

C) This choice is correct. Flow cytometry analysis is a specialized laboratory technique used to classify the type of leukemia and its subtype based on specific cell markers present on the surface of leukemic cells. This information helps guide the appropriate treatment plan.

D) This choice is incorrect because evaluating the client's kidney function is not the primary purpose of flow cytometry analysis in the diagnostic evaluation of leukemia.

A) This choice is incorrect because impaired bone density would not directly cause ecchymoses on the skin. It might lead to an increased risk of fractures, but not bruising.

B) This choice is correct. Ecchymoses (bruises) of varying sizes with minimal trauma are common in leukemia due to a deficiency of platelets and impaired clotting factors in the blood. Leukemia can lead to decreased platelet production and clotting abnormalities, resulting in easy bleeding and bruising.

C) This choice is incorrect because increased production of platelets would improve clotting abilities and reduce the risk of ecchymoses.

D) This choice is incorrect because elevated levels of red blood cells would not directly cause ecchymoses on the skin. It may lead to other symptoms like increased blood viscosity.