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Ege Üniversitesi Tıp Fakültesi Pediatrik Nöroşirürji Bilim Dalı, Bornova, İzmir Infection is one of the most common and serious complications of shunt surgery and may lead to mortality in 30-40% of the cases. In addition, it may cause both intellectual and neurological deficits. In the literature, 4.5-14% and 8-40% infection rates per person and per procedure, respectively have been reported. Colonization at the time of shunt insertion is considered the most common type of infection. Sixty-nine percent and 86% of the shunt infections occur within one and 6 months following surgery, respectively. About 50% of patients present with the classical signs of infection. They may present with the signs of shunt malfunction or systemic disease. Shunt infections may mimic any disease. Age is one of the most important risk factors in the development of shunt infection. Staphylococcus epidermidis is isolated in 50-75% of the patients with shunt infection. Staphylococcus aureus, gram-negative bacilli and anaerobic diphteroids are the other microorganisms isolated from cultures. Shunt removal, external ventricular drainage and re-insertion of a new shunt after the treatment of infection is the most effective method. More infection is suspected and searched, greater number of patients with shunt infection is diagnosed. Pre and peroperative measures are crucial in the prevention of shunt infections. Anahtar Kelimeler : Hydrocephalus, cerebrospinal fluid, shunt, infection