Abstract:
:Some investigators argue that treating epilepsy with several antiepileptic drugs (AEDs) simultaneously (polytherapy) may give rise to more adverse effects than monotherapy, but this argument lacks supporting quantitative data. To reexamine this issue, we recruited a cohort of patients from the outpatients of the Special Centres for Epilepsy in The Netherlands and from the outpatients of the Department of Neurology, Nijmegen University, The Netherlands. Two tools were used for analysis. All daily doses of antiepileptic drugs (AEDs) were standardized by the ratio of prescribed daily dose to defined daily dose (PDD/DDD). The DDD is the assumed average effective daily dose for a drug used for its main indication in adults. The assignment of DDD values is the task of the World Health Organization (WHO) Collaborating Centre for Drugs Statistics Methodology and Nordic Council on Medicines, which regularly publishes Guidelines for Defined Daily Doses. The severity of adverse effects (AE) was assessed by using the Neurotoxicity Index and the Systemic Toxicity Index as developed by the VA Cooperative Study Group for their recent studies comparing the efficacy and tolerability of AEDs. One hundred sixty-one patients received monotherapy; all had a PDD/DDD ratio < or = 2/day; 128 of 262 patients receiving polytherapy also had < or = 2 PDD/DDD ratios/day. The mono- and polytherapy groups were stratified according to the PDD/DDD ratio. The prevalence of neurological AE for patients with similar PDD/DDD ratios was 50-80% for monotherapy patients and 50-82% for polytherapy patients. The difference between the mono- and polytherapy groups was not significant.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Epilepsiajournal_title
Epilepsiaauthors
Lammers MW,Hekster YA,Keyser A,Meinardi H,Renier WO,van Lier Hdoi
10.1111/j.1528-1157.1995.tb00484.xsubject
Has Abstractpub_date
1995-05-01 00:00:00pages
440-6issue
5eissn
0013-9580issn
1528-1167journal_volume
36pub_type
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