{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T14:03:59Z","timestamp":1784642639575,"version":"3.55.0"},"reference-count":16,"publisher":"BMJ","issue":"7","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,7,6]]},"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:p>\n                    Seizure-like episodes may occasionally arise from cardiovascular causes rather than primary neurological disease, leading to diagnostic delay. We report an adolescent girl who presented with recurrent generalised tonic episodes with cyanosis and transient loss of consciousness. Initial evaluation for epilepsy, including video electroencephalography during an event, was unremarkable. Cardiac assessment revealed marked biatrial dilatation with restrictive ventricular physiology on echocardiography, consistent with restrictive cardiomyopathy (RCM). Ambulatory monitoring documented atrial tachycardia (AT) immediately preceding the episodes, strongly suggesting arrhythmia-related cerebral hypoperfusion as the underlying mechanism of convulsive syncope. The patient subsequently experienced cardiac arrest but was successfully resuscitated and stabilised with rhythm control therapy. Genetic testing identified a heterozygous\n                    <jats:italic>TNNI3<\/jats:italic>\n                    variant consistent with familial RCM. This case highlights the importance of considering cardiac causes in apparent seizures, illustrates the haemodynamic vulnerability of RCM to AT and underscores the value of early cardiac evaluation in children with unexplained seizure-like events.\n                  <\/jats:p>","DOI":"10.1136\/bcr-2026-274228","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T13:35:13Z","timestamp":1784640913000},"page":"e274228","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Beyond epilepsy: convulsive syncope revealing restrictive cardiomyopathy in a child"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0169-410X","authenticated-orcid":false,"given":"Benjamin Wei-Liang","family":"Ng","sequence":"first","affiliation":[{"name":"Faculty of Medicine, SEGi University, Kota Damansara, Selangor, Malaysia"},{"name":"Department of Paediatrics, Sibu Hospital, Sibu, Sarawak, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin Ngie-Liong","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Paediatric Cardiology, Sarawak Heart Center, Kuching, Sarawak, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,7,21]]},"reference":[{"key":"2026072106350748000_19.7.e274228.1","doi-asserted-by":"publisher","DOI":"10.1161\/CIR.0000000000000682"},{"key":"2026072106350748000_19.7.e274228.2","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.112.104638"},{"key":"2026072106350748000_19.7.e274228.3","doi-asserted-by":"crossref","DOI":"10.3389\/fped.2020.00139","article-title":"Sudden Cardiac Death in Children Affected by Cardiomyopathies: An Update on Risk Factors and Indications at Transvenous or Subcutaneous Implantable Defibrillators","volume":"8","author":"Rella","year":"2020","journal-title":"Front 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matter","volume":"11","author":"Christmas","year":"2025","journal-title":"HeartRhythm Case Rep"},{"key":"2026072106350748000_19.7.e274228.11","doi-asserted-by":"crossref","DOI":"10.3389\/fped.2021.745365","article-title":"Pediatric Restrictive Cardiomyopathies","volume":"9","author":"Ditaranto","year":"2021","journal-title":"Front Pediatr"},{"key":"2026072106350748000_19.7.e274228.12","doi-asserted-by":"publisher","DOI":"10.1155\/2010\/180682"},{"key":"2026072106350748000_19.7.e274228.13","doi-asserted-by":"publisher","DOI":"10.1172\/JCI200316336"},{"key":"2026072106350748000_19.7.e274228.14","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1002\/ehf2.14188","article-title":"SGLT2 inhibitor therapy for transthyretin amyloid cardiomyopathy: early tolerance and clinical response to dapagliflozin","volume":"10","author":"Dobner","year":"2023","journal-title":"ESC Heart Fail"},{"key":"2026072106350748000_19.7.e274228.15","first-page":"833","article-title":"SGLT2i in heart failure: can their benefits be expanded across the entire spectrum of ejection fraction?","volume":"75","author":"Requena-Ib\u00e1\u00f1ez","year":"2022","journal-title":"Rev Esp Cardiol (Engl Ed)"},{"key":"2026072106350748000_19.7.e274228.16","doi-asserted-by":"crossref","first-page":"610","DOI":"10.14740\/jocmr2583w","article-title":"Convulsive Syncope Induced by Ventricular Arrhythmia Masquerading as Epileptic Seizures: Case Report and Literature Review","volume":"8","author":"Sabu","year":"2016","journal-title":"J Clin Med Res"}],"container-title":["BMJ Case 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