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Eur J Paediatr Neurol. 1999;3(3):105-11.

Clinical experiences with topiramate in children with intractable epilepsy.

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Dianalund Epilepsy Hospital, Denmark.


At a tertial referral epilepsy centre 39 children were consecutively enrolled in an open add-on study with topiramate (TPM). All children had intractable epilepsy; the mean seizure frequency was 36 per month, and 31 children were treated with polypharmacy. All but five children were mentally retarded. The initial dose of TPM was 0.5-1 mg/kg daily, slowly titrated with 1-3 mg/kg daily every second week with an estimated target dose of 10 mg/kg daily. At latest follow-up 19 children continued on TPM, three (8%) were seizure-free, eight (21%) had a seizure reduction of more than 50% and eight (21%) improved their general condition. Mean follow-up was 13 months (range 9-36 months). Seizure reduction was seen in focal as well as generalized epilepsies. Adverse effects were reported in 21 cases (54%), weight loss and sedation being most frequent. The mean steady state dose in the children continuing on TPM was at latest follow-up: 14 mg/kg daily (< 5 years), 10 mg/kg daily (5-7 years), 5.8 mg/kg daily (8-17 years). The corresponding plasma level varied from 3 to 45 mumol/litre, and a significant correlation between the daily dose in mg/kg and the plasma level was found. Two patients with progressive myoclonus epilepsy are described separately; one had a dramatic general improvement. It is concluded that TPM seems to be a promising new broad-spectrum anti-epileptic drug, which is efficacious even in epilepsy syndromes, intractable to other new anti-epileptic drugs such as vigabatrin and lamotrigine.

[Indexed for MEDLINE]

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