Background And Objectives: Zinc has been reported to be low in children with febrile seizure compared to febrile cases without seizures, but results are inconsistent. A meta-analysis was performed to systematically evaluate the serum level of zinc in febrile children aged between 6-72 months with or without seizures.
Material And Methods: A systematic search of databases was performed from January 2000 to January 2019. Studies comparing the serum level of zinc in febrile children with or without seizure were selected.
Results: The major outcome was serum level of zinc. Random effect model was used to calculate pooled standardized mean differences (SMD) with 95% confidence intervals (CIs). A total of 31 articles were included. Meta-analysis suggested that the serum level of zinc is lower in patients with febrile seizure versus febrile cases without seizure (SMD: -1.2, 95%CI= (-1.47, -0.93). In subgroup and sensitivity analysis no significant change was observed in pooled SMD. In meta-regression analysis sample size as a continuous variable had a significant influence on between-study variance (p= 0.02). According to cumulative analysis the difference of serum level of zinc in febrile children with or without seizure decreased with time.
Conclusion: This meta-result indicated a significant association of zinc deficiency with seizure in febrile children. It is suspected that decreased level of zinc may be involved in seizure occurrences and it may play a role in the pathogenesis of febrile seizure.
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