{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T03:29:44Z","timestamp":1793158184739,"version":"4.5.0"},"reference-count":27,"publisher":"Oxford University Press (OUP)","issue":"11","license":[{"start":{"date-parts":[[2024,10,30]],"date-time":"2024-10-30T00:00:00Z","timestamp":1730246400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"National Institute for Metabolic and Cardiovascular Research"},{"name":"European Union\u2014Next Generation EU","id":[{"id":"https:\/\/ror.org\/019w4f821","id-type":"ROR","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100019896","name":"Ministry of Health","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100019896","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,11,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>Catheter ablation is an effective treatment method for recurrent ventricular tachycardias (VTs). However, at least in part, procedural and clinical outcomes are limited by challenges in generating an adequate lesion size in the ventricular myocardium. We investigated procedural and clinical outcomes of VT ablation using a novel \u2018large-footprint\u2019 catheter that allows the creation of larger lesions either by radiofrequency (RF) or by pulsed field (PF) energy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and results<\/jats:title>\n                    <jats:p>In prospectively collected case series, we describe our initial experience with VT ablation using a lattice-tip, dual-energy catheter (Sphere-9, Medtronic), and a compatible proprietary electroanatomical mapping system (Affera, Medtronic). The study population consisted of 18 patients (aged 55 \u00b1 15 years, one woman, structural heart disease: 94%, ischaemic heart disease: 56%, left ventricular ejection fraction: 34 \u00b1 10%, electrical storm: 22%) with recurrent sustained VTs and \u22651 previously failed endocardial RF ablation with conventional irrigated-tip catheter in 66% of patients. On average, 12 \u00b1 7 RF and 8 \u00b1 9 PF applications were delivered per patient. In three-fourths of patients undergoing percutaneous epicardial ablation, spasms in coronary angiography were observed after PF applications. All resolved after intracoronary administration of nitrates. No acute phrenic nerve palsy was noted. One patient suffered from a stroke that resolved without sequelae. Post-ablation non-inducibility of VT was achieved in 89% of patients. Ventricular-arrhythmia-free survival at three months was 78%.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>VT ablation using a dual-energy lattice-tip catheter and a novel electroanatomical mapping system is feasible. It allows rapid mapping and effective substrate modification with good outcomes during short-term follow-up.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/europace\/euae275","type":"journal-article","created":{"date-parts":[[2024,10,29]],"date-time":"2024-10-29T08:52:52Z","timestamp":1730191972000},"source":"Crossref","is-referenced-by-count":34,"title":["Mapping and ablation of ventricular tachycardia using dual-energy lattice-tip focal catheter: early feasibility and safety study"],"prefix":"10.1093","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5625-0071","authenticated-orcid":false,"given":"Petr","family":"Peichl","sequence":"first","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0448-5143","authenticated-orcid":false,"given":"Dan","family":"Wichterle","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-5106-4314","authenticated-orcid":false,"given":"Filip","family":"Schlosser","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1487-5823","authenticated-orcid":false,"given":"Predrag","family":"Stojadinovi\u0107","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vojt\u011bch","family":"Nejedlo","sequence":"additional","affiliation":[{"name":"Cardiac Ablation Solutions, Medtronic , Minneapolis, MN ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9756-283X","authenticated-orcid":false,"given":"Eva","family":"Bori\u0161incov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1547-5696","authenticated-orcid":false,"given":"Josef","family":"Marek","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6063-3545","authenticated-orcid":false,"given":"Peter","family":"\u0160tiavnick\u00fd","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3774-8672","authenticated-orcid":false,"given":"Jana","family":"Ha\u0161kov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 ,","place":["Czechia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1632-6182","authenticated-orcid":false,"given":"Josef","family":"Kautzner","sequence":"additional","affiliation":[{"name":"Department of Cardiology, IKEM , V\u00edde\u0148sk\u00e1 1958\/9, Prague 140 00 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