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Serum C-reactive protein in childhood meningitis in countries with limited laboratory resources: a Chilean experience
Insights
Quantitative C-reactive protein (CRP) levels effectively distinguish bacterial meningitis from aseptic meningitis in children. Sequential CRP monitoring aids in detecting complications during bacterial meningitis recovery.
Area of Science:
- Pediatrics
- Infectious Diseases
- Clinical Chemistry
Background:
- Meningitis diagnosis in children requires accurate differentiation between bacterial and aseptic causes.
- C-reactive protein (CRP) is a key inflammatory marker, but its utility in sequential monitoring for meningitis complications needs further elucidation.
Purpose of the Study:
- To assess the diagnostic value of quantitative C-reactive protein (CRP) in differentiating bacterial meningitis (BM) from aseptic meningitis (AM) in children.
- To evaluate the role of sequential CRP measurements in identifying complications during the recovery phase of BM.
Main Methods:
- Quantitative CRP levels were measured sequentially using nephelometry and photometry in children diagnosed with BM (n=67) and AM (n=16).
- Initial and serial CRP values were analyzed to compare diagnostic accuracy and identify indicators of complications.
Main Results:
- Initial mean CRP levels were significantly higher in BM (180 mg/L) compared to AM (12 mg/L) (P < 0.001).
- A slow CRP decline or secondary increase in BM patients indicated complications, with significant differences observed from day four (P < 0.001).
- Nephelometry and photometry showed high correlation (r=0.99).
Conclusions:
- Quantitative CRP is a valuable tool for distinguishing BM from AM in pediatric patients.
- Sequential CRP monitoring provides early detection of complications in BM, improving patient care, especially in resource-limited settings.
Abstract:
Quantitative C-reactive protein (CRP) was determined sequentially by nephelometry and photometry from a finger prick serum sample in 67 children with bacterial meningitis (BM) and 16 children with aseptic meningitis (AM). The initial mean CRP value of 180 mg/liter in children with BM differed significantly from the 12 mg/liter found in those with AM (P less than 0.001). In BM a slow descent instead of rapid normalization or a secondary increase in sequential CRP values were early indicators of complications during recovery, such as resistance to the antibiotic. A significant difference in the mean CRP values between uneventful and complicated courses of BM was observed from the fourth day on (P less than 0.001). The measurements obtained with nephelometry correlated reliably with the more widely available photometry (r = 0.99). Easily performed rapid CRP determinations can considerably improve the quality of care in meningitis patients, especially in those situations where facilities for performing bacterial cultures or antibiotic susceptibility testing are not available.