30-Second Takeaway
- Epilepsy surgery improves mood, psychosis, and quality of life primarily when **seizure freedom** is achieved.
Week ending June 20, 2026
Grand Rounds: Recent evidence summaries for surgical and perioperative neuroscience
Epilepsy surgery modestly improves mood and QoL; seizure freedom drives benefit
Systematic review/meta-analysis of 42 studies (n=6218) found pooled depression improvement was small-to-moderate (SMD = -0.24). When patients achieved seizure freedom the effect on depression was larger (SMD = -0.47); no meaningful change with persistent seizures. Epilepsy-related psychoses fell from 17.5% preop to 4.2% postop, but 16.3% developed de novo psychiatric disorders (most commonly depression and anxiety). Verbal memory decline occurred in 17–37% after temporal lobe surgery, though seizure freedom mitigated quality-of-life impact.
Pivotal device trials rarely integrate equity-focused design or analyses
Scoping review of 74 pivotal device trials (predominantly RCTs) found age and sex were reported but rarely analyzed in subgroup frameworks. Race/ethnicity was reported in 35.1% of studies and seldom included in outcome analyses, limiting external validity. Only 2.7% of trials explicitly framed equity in design or recruitment, and no trial used CONSORT‑Equity reporting guidance.
Noninvasive neuromodulation for headache shows promise but trial quality varies
Systematic review of 70 trials (1990–2024) covering nVNS, e‑TNS, sTMS/rTMS, and REN found heterogeneous endpoints and variable IHS guideline adherence. Acute migraine trials were often randomized and sham‑controlled; preventive trials showed greater methodological variability. For cluster headache, evidence exists only for nVNS, and the authors conclude larger, robust sham‑controlled trials are needed to confirm efficacy.
References
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Additional Reads
Optional additional studies from this edition.