AED Quiz | Episode 16 | Audio Epilepsy Digest

1. What is the safest interpretation of the Korean prenatal antiseizure-medication cohort? Prenatal antiseizure-medication exposure was associated with selected neurodevelopmental outcomes after adjustment, but the observational design cannot establish a causal drug effect. The study proves that antiseizure medications cause autism and intellectual disability. Propensity-score matching eliminates confounding by indication and disease severity. The findings apply equally to every medication, dose, indication, and pregnancy.

Correct answer: A. The cohort provides an adjusted association signal. Mixed indications, prescription-based exposure, residual familial factors, disease severity, and confounding by indication still constrain causal interpretation.

2. Why can the eslicarbazepine global safety database not provide a pregnancy-complication rate? Because spontaneous reports are never useful for medication safety. Because its outcomes were limited to congenital anomalies. Because the report collection lacks a valid exposed-population denominator and comparator and contains substantial missing outcome information. Because all reported pregnancies used eslicarbazepine as monotherapy.

Correct answer: C. The database can look for repeated patterns across reported miscarriage, congenital anomaly, neonatal adverse effect, and premature-birth outcomes, but selective reporting, missingness, polytherapy, and the absent denominator block incidence and comparative-risk claims.

3. What does zero attributed hypersensitivity events among 32 selected cenobamate restart patients mean? The hypersensitivity risk is zero after any interruption. Maintenance-dose restart is safe for all outpatients who miss doses. The finding is reassuring within this selected setting, but an approximate rule-of-three upper uncertainty bound is still near 9 percent. The study proves residual drug exposure creates immune tolerance.

Correct answer: C. Zero observed events narrows uncertainty but does not erase it. The cohort was small, previously tolerant, hospitalized, variably restarted, and followed for a limited period.

4. Which clinical response best matches the three study designs? Stop necessary antiseizure medication during pregnancy and routinely restart cenobamate at maintenance dose after missed doses. Use the evidence to rank the three medications from safest to least safe. Treat the absence of a repeated pharmacovigilance pattern as proof of safety. Strengthen indication-aware counseling, continue pharmacovigilance, and individualize restart decisions while preserving each study's uncertainty.

Correct answer: D. The episode matches the verb and clinical response to the data-generating system. None of the studies justifies abrupt discontinuation, a drug-safety ranking, or a universal restart protocol.

Signals, Silence, and Zero Events

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