Harr Hematology Complete Practice Test 2026

Hypersplenism is characterized by the overactivity of the spleen, leading to the excessive destruction of blood cells. One of the key effects of hypersplenism is leukopenia, which refers to a decrease in the number of white blood cells (leukocytes) in the bloodstream. In hypersplenism, the spleen sequesters (traps) and removes a greater number of these cells from circulation, which can result in an inadequate immune response and increased vulnerability to infections.

While hypersplenism might also influence red blood cells and platelets, the hallmark feature in this scenario is the reduction in white blood cell counts. This condition often requires careful management to address the underlying cause of the splenic hyperactivity and to monitor for potential complications arising from low leukocyte levels.