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The value of serum procalcitonin in acute meningitis in children.
Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia 2018 October
Early diagnosis and initial therapy are important to reduce the complications of bacterial meningitis. We aimed to evaluate the diagnostic value of serum procalcitonin in children with acute meningitis. We included 40 children (4 months-14 years) suspected to have acute meningitis in our study. Based on the clinical scenario, physical examination and complete analysis of cerebrospinal fluid, patients were assigned into two groups: bacterial meningitis group (24 patients) and aseptic meningitis group (16 patients). Twenty-five apparently healthy children of matched age and sex served as a control group. Procalcitonin, C-reactive protein, and leukocyte count were measured initially at the time of admission and again after 72 h. Initially, patients with bacterial meningitis showed statistically significant higher values of serum procalcitonin than both patients with aseptic meningitis and the control groups (p < 0.001). After 72 h of treatment, patients of bacterial meningitis group showed statistically significant lower values of serum procalcitonin than their initial values (P < 0.05). The cutoff point of procalcitonin needed for early diagnosis of bacterial meningitis was >10 ng/ml at the time of admission. However, values of procalcitonin >2 ng/ml had 100% sensitivity. Whereas, the specificity, negative predictive value and positive predictive value of procalcitonin were 63%, 100%, and 67% respectively. Serum Procalcitonin can be used as an early diagnostic marker of acute bacterial meningitis and its differentiation from aseptic meningitis. In acute bacterial meningitis, it can be used to follow the response to antibiotic therapy.
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