Observational studyLa Tunisie medicale2024
Factors influencing valproic acid trough levels in epileptic children.
Observational study in La Tunisie medicale, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
objectiveIn this study, we aimed to assess main factors influencing the Valproic Acid (V.Acid) plasma trough levels (C0) and to determine their degree of influence on V.Acid C0 in children with epilepsy who had Therapeutic Drug Monitoring (TDM).
methodsWe conducted an observational study in the Department of Clinical Pharmacology including patients with generalized seizures' epilepsy aged between two and 18 years. Only the children that had benefited from at least two V.Acid C0 determinations were included. First, we assessed daily dose optimization, performed by the practitioners. Then we divided our population into two groups: group A with a final V.Acid C0 in the therapeutic range (TR) and group B with a final V. Acid C0 outside the TR to find out factors influencing V.Acid C0 journey.
resultsWe included 805 patients (2537 V.Acid C0). The median age was 6.24 years and the sex ratio (M/F) was 1.45. The median V.Acid normalized daily dose was 27.27mg/kg/day and the median V.Acid C0 was 57µg/mL. The children's first V.Acid C0 was in the TR in 59.4% and V.Acid daily dose optimization was performed by the practitioners in 72.3%. Comparing GroupA and B, we found that age and the number of V.Acid C0 determinations increases the chance to reach the TR by respectively 3.79% and 7.39%.
conclusionOlder children who benefit from higher number of performed V.Acid C0 were more likely to reach the TR. In children who beneficiate from a TDM of V.Acid, close follow-up is mandatory to reach and maintain therapeutic V.Acid C0.
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