Etiology and complications of central nervous system infections in children treated in a pediatric intensive care unit in Poland.

Central nervous system infections are significant causes of mortality and long-term neurologic complications in children. Survivors often require an extended period of rehabilitation. The authors carried out a retrospective analysis of 1158 children (aged 1 month to 16 years; 31 boys) treated in one pediatric intensive care unit in Warsaw between 2002 and 2010. Forty-three of 1158 (3.7%) children presented with neuroinfections. Nearly two-thirds of the children were younger than age 5 years. The majority of cases (62.8%) were vaccine-preventable bacterial infections. The most frequent complications were brain edema (30.2%), brain hemorrhage (27.9%), and secondary nosocomial pneumonia (25.6%). One-fifth of children developed late, long-term neurologic complications. The mortality rate was 20.9%. The study showed that central nervous system infections are significant causes of hospitalization in the pediatric intensive care unit and often result in death or long-term complications. These infections mainly affect children younger than age 5 years. The majority could be prevented with immunizations.