Splenectomy offers a 2nd line treatment for those who fail steroids. The criteria for surgery are severe thrombocytopenia (<10,000), high risk of bleeding or the requirement of frequent steroids/IVIgG/anti-D treatment to maintain an adequate platelet count. Of the ~15% of children with persistent thrombocytopenia bleeding symptoms are uncommon and splenectomy is rarely required. However splenectomy is an effective treatment option for children with severe / symptomatic thrombocytopenia with a CR of ~75%. Because of the risk for overwhelming sepsis after splenectomy it should be deferred until after 5 years of age. Remember to give immunizations before splenectomy and perioperative antibiotics. Response to IV-IgG often predicts a response to splenectomy (increasing the platelet count to >50,000 with IgG means a >90% RR to splenectomy).^[1]

Splenectomy is safe and effective in ~80% of patients with refractory HIV-related thrombocytopenia and treated with interferon (IFN) may be effective in refractory cases of patients coinfected with HCV. A decrease in platelets in HIV can arise secondary to both HCV and hepatitis B (HBV).^[2]