Paeds Vivas · neurology-neurodisability-and-neuromuscular
Antiseizure medicines: selection, adverse effects and monitoring — branching viva
Branching viva on antiseizure medicine selection, adverse effects and monitoring: classifying the drug by spectrum and mechanism, choosing the syndrome-matched first-choice medicine, recognising the adverse-effect signature of each agent, applying the valproate pregnancy prevention programme, and managing the lamotrigine rash and the carbamazepine hyponatraemia scenarios.
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Target exams
Opening question
A ten-year-old boy with focal epilepsy is two weeks into levetiracetam and his parents report new irritability and aggression. His seizures are controlled. Classify the drug by spectrum and mechanism, explain the behavioural adverse effect and its approximate frequency, and outline your management. [5] [1]
Branch 1 — the spectrum rule
The family asks whether the uncle's carbamazepine could be used instead. What is the spectrum classification of carbamazepine, why is it appropriate for focal epilepsy, and what syndrome must it never be given for? [1] [5]
Branch 2 — the valproate pregnancy prevention programme
Fast forward: a fourteen-year-old girl with juvenile myoclonic epilepsy needs valproate for optimal control. What is the valproate pregnancy prevention programme, what conditions must be met before prescribing, and what are the preferred alternatives in a female of childbearing potential? [7] [5]
Branch 3 — the lamotrigine rash scenario
If lamotrigine is chosen as the alternative, what is the titration rule, why does concurrent valproate require an even slower titration, and what is the severe cutaneous adverse effect the slow titration prevents? [11]
Closing — monitoring and coordination
In one sentence, what is the principle of managing antiseizure medicines across childhood — selecting by the syndrome, titrating slowly, surveying the adverse-effect signature at every visit, and referring for presurgical evaluation after two failed drugs — and why does the general paediatrician sit at the centre of the plan? [1] [5]
References
- [1]Glauser T, Ben-Menachem E, Bourgeois B, et al. Updated ILAE evidence review of antiepileptic drug efficacy and effectiveness as initial monotherapy for epileptic seizures and syndromes. Epilepsia, 2013.PMID 23350722
- [5]Perucca P, Gilliam FG. Adverse effects of antiepileptic drugs. Lancet Neurol, 2012.PMID 22832500
- [7]Pack AM, Oskoui M, Williams Roberson S, et al. Teratogenesis, Perinatal, and Neurodevelopmental Outcomes After In Utero Exposure to Antiseizure Medication: Practice Guideline From the AAN, AES, and SMFM. Neurology, 2024.PMID 38748979
- [11]Guberman AH, Besag FM, Brodie MJ, et al. Lamotrigine-associated rash: risk/benefit considerations in adults and children. Epilepsia, 1999.PMID 10403224