Childhood acute bacterial meningitis: risk factors for acute neurological complications and neurological sequelae.

Objective: To assess acute neurological complications and neurological sequelae of childhood acute bacterial meningitis in order to determine possible warning signs.

Methods: This retrospective study evaluated children with acute bacterial meningitis (between 1 month and 14 years of age) admitted between 2003 and 2006.

Results: Of the 44 patients studied, 17 (38.6%) had acute neurological complications. Seizure was the most frequent (31.8%) complication. Patients with acute neurological complications showed a higher frequency of lower neutrophil count (p = 0.03), seizure at admission (p < 0.01), and S. pneumoniae as the etiologic agent (p = 0.01). Risk factors for the development of acute neurological complications were S. pneumoniae (odds ratio [OR] = 6.4, confidence interval [CI] 1.7-24.7) and neutrophil count < 60% (p < 0.01). Of the 35 patients who were followed up, 14 had neurological sequelae (40%). Behavioral change (22.9%) was the most frequent sequela. Seizures at admission (OR = 5.6, CI 1.2-25.9), cerebrospinal fluid protein concentration > 200 mg/dL (p < 0.01), and cerebrospinal fluid glucose concentration/glycemia ratio (p < 0.01) were identified as risk variables for sequelae.

Conclusion: Neutrophil count < 60%, seizure at admission, and S. pneumoniae as the etiologic agent were identified as warning signs for acute neurological complications, while protein levels, cerebrospinal fluid glucose concentration/glycemia ratio, and seizure at admission were seen as risk factors for neurological sequelae.