{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T11:50:08Z","timestamp":1753876208457,"version":"3.41.2"},"reference-count":13,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2023,3,9]],"date-time":"2023-03-09T00:00:00Z","timestamp":1678320000000},"content-version":"vor","delay-in-days":8,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,3,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Ventricular tachycardia (VT) originating in the right ventricular outflow tract (RVOT) is the most common form of idiopathic VT. Catheter ablation of right ventricular outflow tract tachycardia (RVOT-VT) is associated with high success rates. However, non-inducibility of VT on electrophysiological (EP) study can severely impact ablation outcome. We describe a novel catheter ablation strategy which proved feasible and safe in a case of highly symptomatic, non-inducible RVOT-VT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case summary<\/jats:title><jats:p>A 51-year-old male with a history of non-sustained VT (NSVT) was referred to our hospital after two syncopal episodes resulting in collapse. Upon admission, a cluster of monomorphic NSVT (250\u2013270\u2005b.p.m.) resulted in haemodynamic instability and required transfer to the intensive care unit. On twelve-lead electrocardiogram, NSVT showed inferior axis and left bundle branch block, suggestive of RVOT-VT. Diagnostic workup including echocardiography, coronary angiography, and late enhancement computed tomography (CT) revealed no evidence of structural heart disease. On two EP studies, non-inducibility of clinical VT despite repeated ventricular pacing and isoproterenol infusion rendered precise mapping of triggered activity unfeasible. Therefore, a bailout ablation strategy was developed by performing a circumferential electrical RVOT isolation using a 3.5\u2005mm irrigated-tip ablation catheter under the guidance of high-density electroanatomic mapping (CARTO\u00ae 3) and CT reconstruction of cardiac anatomy. No procedural complications occurred, and the patient remained arrhythmia-free during a 6-month follow-up period.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Catheter ablation is a first-line therapy for symptomatic and drug-refractory idiopathic RVOT-VT. Non-inducibility of RVOT-VT represents a relevant limitation for successful ablation which might be overcome by electrical RVOT isolation as a bailout ablation strategy.<\/jats:p><\/jats:sec>","DOI":"10.1093\/ehjcr\/ytad118","type":"journal-article","created":{"date-parts":[[2023,3,9]],"date-time":"2023-03-09T17:25:58Z","timestamp":1678382758000},"source":"Crossref","is-referenced-by-count":0,"title":["Electrical isolation of the right ventricular outflow tract in idiopathic ventricular tachycardia: a case report"],"prefix":"10.1093","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9308-2492","authenticated-orcid":false,"given":"Miruna A","family":"Popa","sequence":"first","affiliation":[{"name":"Department of Electrophysiology, German Heart Center Munich, Technical University of Munich , Lazarettstra\u00dfe 36, 80636 Munich , Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gabriele","family":"Hessling","sequence":"additional","affiliation":[{"name":"Department of Electrophysiology, German Heart Center Munich, Technical University of Munich , Lazarettstra\u00dfe 36, 80636 Munich , Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isabel","family":"Deisenhofer","sequence":"additional","affiliation":[{"name":"Department of Electrophysiology, German Heart Center Munich, Technical University of Munich , Lazarettstra\u00dfe 36, 80636 Munich , Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4861-6595","authenticated-orcid":false,"given":"Felix","family":"Bourier","sequence":"additional","affiliation":[{"name":"Department of Electrophysiology, German Heart Center Munich, Technical University of Munich , Lazarettstra\u00dfe 36, 80636 Munich , Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2023,3,9]]},"reference":[{"key":"2023032214572765000_","doi-asserted-by":"crossref","first-page":"e004662","DOI":"10.1161\/CIRCEP.116.004662","article-title":"Incidence of idiopathic ventricular arrhythmias: a population-based study","volume":"10","author":"Sirichand","year":"2017","journal-title":"Circ Arrhythm Electrophysiol"},{"key":"2023032214572765000_","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1097\/00005792-198809000-00001","article-title":"Idiopathic ventricular tachycardia. 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