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Abstract Background: Bacterial meningoencephalitis presents significant diagnostic and therapeutic challenges with high morbidity and mortality in pediatric populations worldwide. The early and precise identification of the etiology of these infections is essential for effective treatment and better patient results. Traditional diagnostic methods, while effective, can be time-consuming. This manuscript aims to evaluate the accuracy of serum procalcitonin (PCT), cerebrospinal fluid (CSF) neutrophil-to-lymphocyte ratio (NLR), and CSF lactate as biomarkers in pediatric bacterial meningoencephalitis. Methods: From March 2021 to November 2023, a cross-sectional study was conducted at Dr. Sardjito General Hospital, a tertiary referral hospital in Yogyakarta, Indonesia. One hundred ninety-seven patients underwent complete clinical and laboratory examinations before being divided into bacterial and non-bacterial groups based on CSF culture results and cytochemical profiles. The diagnostic accuracy was evaluated by the receiver operating characteristic curve using Statistical Package for the Social Sciences. Results: Serum PCT, CSF NLR, and CSF lactate levels showed a notable increase in the bacterial meningoencephalitis group (mean = 4.63 ± 5.52 ng/ml, 4.39 ± 6.68, and 3.59 ± 2.38 mmol/l, respectively) compared to the viral/aseptic group (mean = 0.51 ± 0.88 ng/ml, 0.33 ± 0.95, and 2.25 ± 2.33 mmol/l, respectively) ( P < 0.001). Serum PCT and CSF NLR combined measurement had high sensitivity (86.4%) and specificity (88.6%), with an area under the curve of 0.929 (95% confidence interval, 0.873–0.985), surpassing other tested biomarkers. Conclusion: The findings suggest that combining serum PCT and CSF NLR could be beneficial for early diagnosis, potentially allowing timely, targeted treatment and differentiating between bacterial and non-bacterial infections, ultimately improving patient outcomes.
Nugrahanto et al. (Fri,) studied this question.