{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T05:18:19Z","timestamp":1787894299070,"version":"build-2784847793"},"reference-count":16,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T00:00:00Z","timestamp":1787875200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurol."],"abstract":"<jats:p>\n                    Endovascular aneurysm exclusion has revolutionized neurovascular care, yet postoperative seizures remain a significant cause of morbidity. As endovascular technologies evolve from simple coiling to complex flow diversion, identifying factors associated with postoperative seizures is essential for improving risk stratification and neurocritical care. This systematic review and meta-analysis, registered in PROSPERO (CRD420261375370), followed PRISMA 2020 guidelines. A comprehensive search of MEDLINE, Scopus, Embase, and the Cochrane Library was conducted through April 13, 2026. Studies published since 2016 investigating factors associated with seizures after endovascular treatment (coiling, flow diversion, or stent-assisted techniques) were included. Random-effects meta-analysis was performed using R to calculate pooled odds ratios (OR) and 95% confidence intervals (CI), with subgroup and sensitivity analyses performed where feasible. Six studies met the inclusion criteria for qualitative and quantitative synthesis. Radiological markers showed the strongest associations with post-procedural seizures. Hydrocephalus demonstrated the highest association (OR 3.91, 95% CI: 1.22 to 12.53), followed by Fisher grade 3\u202f+\u202f4 blood distribution (OR 3.29, 95% CI: 1.55 to 6.97,\n                    <jats:italic>I<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u202f=\u202f0%). Regarding clinical grading, Hunt-Hess grade 1 to 3 was significantly associated with seizure occurrence (OR 3.15, 95% CI: 1.73 to 5.72), whereas WFNS grade 4 to 5 was also associated with seizure occurrence (OR 1.86, 95% CI: 1.14 to 3.02), although heterogeneity was moderate (\n                    <jats:italic>I<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    \u202f=\u202f60.2%). Factors such as age, sex, MCA involvement, and cerebral oedema did not reach statistical significance (\n                    <jats:italic>p<\/jats:italic>\n                    \u202f&amp;gt;\u202f0.05). Quality assessment using the Newcastle\u2013Ottawa Scale (NOS) indicated overall moderate methodological quality, although the evidence was limited by observational study designs, heterogeneous seizure outcome definitions, and a small number of included studies. Radiological severity of the initial hemorrhage, particularly dense subarachnoid blood and secondary cerebrospinal fluid disturbances, was associated with a higher likelihood of postoperative seizures, whereas anatomical location and patient demographics showed no significant associations. These findings should be interpreted cautiously and may assist future risk stratification; however, they do not alone support specific antiepileptic prophylaxis strategies. Further prospective studies incorporating standardized seizure definitions and continuous EEG monitoring are warranted.\n                  <\/jats:p>\n                  <jats:sec>\n                    <jats:title>Systematic review registration<\/jats:title>\n                    <jats:p>\n                      <jats:ext-link>https:\/\/www.crd.york.ac.uk\/prospero\/search<\/jats:ext-link>\n                      , identifier CRD420261375370.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fneur.2026.1869671","type":"journal-article","created":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T04:30:42Z","timestamp":1787891442000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Predictors of seizures after endovascular aneurysm exclusion: an updated systematic review and meta-analysis"],"prefix":"10.3389","volume":"17","author":[{"given":"Muhammad Aftab","family":"Hassan","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Wah Medical College","place":["Wah Cantt, Punjab, Pakistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maryam","family":"Amjad","sequence":"additional","affiliation":[{"name":"Department of Medicine, Wah Medical College","place":["Wah Cantt, Punjab, Pakistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shifa","family":"Fatima","sequence":"additional","affiliation":[{"name":"Department of Medical Sciences, Wah Medical College","place":["Wah Cantt, Punjab, Pakistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jannat","family":"Yaqoob","sequence":"additional","affiliation":[{"name":"Department of Medical Sciences, Shahida Islam Medical College","place":["Lodhran, Punjab, Pakistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdul Rahim","family":"Soroush","sequence":"additional","affiliation":[{"name":"Medical Faculty, Department of Medical Sciences, Balkh University","place":["Mazar-i-Sharif, Afghanistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sibtain","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Medicine, Baqai Medical University","place":["Karachi, Sindh, Pakistan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonia","family":"Malli","sequence":"additional","affiliation":[{"name":"Southmead Hospital, North Bristol NHS Trust, Department of Neurosurgery","place":["Bristol, United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,8,28]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"17","DOI":"10.1186\/s41016-022-00283-3","article-title":"Endovascular coiling versus microsurgical clipping for ruptured intracranial aneurysms: a meta-analysis and systematic review","volume":"8","author":"Peng","year":"2022","journal-title":"Neuroradiology"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"e191\u2013222","DOI":"10.1016\/j.wneu.2020.02.091","article-title":"Neurosurgical clipping versus endovascular coiling for patients with intracranial aneurysms: a systematic review and meta-analysis","volume":"138","author":"Jiang","year":"2020","journal-title":"World Neurosurg"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"1158\u20131158","DOI":"10.3171\/2011.4.JNS11484","article-title":"Seizures and aneurysms","volume":"115","author":"Connolly","year":"2011","journal-title":"J Neurosurg"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"e460\u20137","DOI":"10.1016\/j.wneu.2024.01.146","article-title":"Risk factors for in-hospital seizure and new-onset epilepsy in coiling and clipping treatment of aneurysmal subarachnoid hemorrhage","volume":"184","author":"Le","year":"2024","journal-title":"World Neurosurg"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"1159\u201368","DOI":"10.3171\/2011.6.JNS101836","article-title":"Epilepsy after subarachnoid hemorrhage: the frequency of seizures after clip occlusion or coil embolization of a ruptured cerebral aneurysm: results from the international subarachnoid aneurysm trial","volume":"115","author":"Hart","year":"2011","journal-title":"J Neurosurg"},{"key":"ref6","doi-asserted-by":"publisher","first-page":"134","DOI":"10.1111\/ene.15564","article-title":"Incidence and association of seizures in stroke patients following endovascular treatment: a systematic review and meta-analysis","volume":"30","author":"Liu","year":"","journal-title":"Eur J Neurol"},{"key":"ref7","doi-asserted-by":"publisher","first-page":"371","DOI":"10.3171\/jns.1991.75.3.0371","article-title":"Unruptured intracranial aneurysms: seizures and antiepileptic drug treatment following surgery","volume":"75","author":"Rabinowicz","year":"1991","journal-title":"J 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(Tokyo)"},{"key":"ref14","doi-asserted-by":"publisher","first-page":"e523","DOI":"10.1016\/j.wneu.2018.04.086","article-title":"Risk factors for in-hospital seizures and new-onset epilepsy in coil embolization of aneurysmal subarachnoid hemorrhage","volume":"115","author":"Nathan","year":"2018","journal-title":"World Neurosurg"},{"key":"ref15","doi-asserted-by":"publisher","first-page":"493","DOI":"10.1007\/s00415-020-10173-2","article-title":"Seizures at the onset of aneurysmal SAH: epiphenomenon or valuable predictor","volume":"268","author":"Darkwah Oppong","year":"2020","journal-title":"J Neurol"},{"key":"ref16","doi-asserted-by":"publisher","first-page":"111594","DOI":"10.1016\/j.jocn.2025.111594","article-title":"Predictors of post-discharge seizures in aneurysmal subarachnoid hemorrhage using EEG data","volume":"141","author":"Haripottawekul","year":"2025","journal-title":"J Clin Neurosci"}],"container-title":["Frontiers in 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