Which of the following cells would most likely be elevated in patients with hemolytic anemia?

In patients with hemolytic anemia, one of the body's responses is the increased production of red blood cells, which is reflected in an elevated count of reticulocytes. Reticulocytes are immature red blood cells that are released from the bone marrow into the bloodstream. When hemolysis occurs, red blood cells are destroyed faster than the body can produce them, prompting the bone marrow to ramp up production in an attempt to replace the lost cells.

This heightened activity leads to an increased reticulocyte count, as the marrow releases more of these youthful red blood cells to mitigate the anemia caused by the destruction of mature red blood cells. The presence of elevated reticulocytes serves as a hallmark of the body compensating for red blood cell loss due to hemolytic processes.

In contrast, the other cell types mentioned are not primarily involved in the response to hemolytic anemia. Basophils, lymphocytes, and monocytes serve different roles within the immune system and are not directly linked to the compensation for red blood cell loss, making the elevation of reticulocytes the most relevant marker in this context.