Delayed cerebral thrombosis in bacterial meningitis: a prospective cohort study
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To study the incidence and clinical characteristics of delayed cerebral thrombosis in bacterial meningitis patients.
We assessed the incidence and clinical characteristics of delayed cerebral thrombosis in adults with cerebrospinal fluid (CSF) culture-proven community-acquired bacterial meningitis included in a prospective nationwide study in The Netherlands performed from 2006 to 2012.
Delayed cerebral thrombosis occurred in 11 of 1,032 episodes (1.1 %). CSF culture yielded Streptococcus pneumoniae in ten patients and Listeria monocytogenes in one. Adjunctive dexamethasone therapy was administered before or with the first dose of antibiotics in 9 of 11 patients; two patients were initially not treated with dexamethasone. All patients made good initial recovery, followed by sudden deterioration after 7–42 days. Cranial imaging studies showed multiple cerebral infarctions in all patients. The outcome was unfavorable in all but one patient. In an explorative analysis, patients with delayed cerebral thrombosis had eightfold higher complement C5a CSF concentrations on the diagnostic lumbar puncture as compared in those without delayed cerebral thrombosis (p = 0.04).
Delayed cerebral thrombosis is a rare but devastating complication of bacterial meningitis. Adjunctive dexamethasone therapy seems to predispose patients with bacterial meningitis to this complication. We found some evidence that this thrombotic complication is associated with activation of the complement system.
KeywordsBacterial meningitis Cerebral infarction Delayed cerebral thrombosis Complication Secondary deterioration
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