Clinical Report: Elevated Serum Total Carbon Dioxide Levels and Seizure Recurrence

Overview

This study identifies elevated serum total carbon dioxide (TCO2) levels at admission as a significant predictor of early seizure recurrence in pediatric patients with benign convulsions associated with mild gastroenteritis. The findings suggest that TCO2 may serve as a useful biomarker for risk stratification in clinical settings.

Background

Benign convulsions with mild gastroenteritis (CwG) are common in young children and can lead to significant parental anxiety and healthcare resource utilization due to potential seizure recurrence. Identifying reliable biomarkers for early recurrence is crucial for optimizing patient management and improving outcomes. This study explores the association between admission serum TCO2 levels and the likelihood of seizure recurrence within 48 hours.

Data Highlights

Key Findings

• 26.7% of children with CwG experienced seizure recurrence within 48 hours.
• Higher admission serum TCO2 levels were significantly associated with increased risk of recurrence.
• The median TCO2 level was 17.4 mmol/L in the recurrence group compared to 15.1 mmol/L in the non-recurrence group (P = 0.007).
• A TCO2 cutoff of 16.25 mmol/L provided 78.3% sensitivity for predicting recurrence.
• There was a strong correlation between venous TCO2 and arterial bicarbonate (r = 0.966, P < 0.001).

Clinical Implications

Clinicians should consider measuring serum TCO2 levels in pediatric patients presenting with benign convulsions associated with mild gastroenteritis to assess the risk of early seizure recurrence. This biomarker may aid in decision-making regarding observation and management strategies in the emergency department.

Conclusion

Elevated serum TCO2 levels at admission are linked to an increased risk of early seizure recurrence in children with CwG. Further validation in prospective studies is necessary to confirm these findings and establish TCO2 as a standard biomarker in clinical practice.

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