{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T22:21:28Z","timestamp":1790720488422,"version":"4.1.0"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,12,11]],"date-time":"2024-12-11T00:00:00Z","timestamp":1733875200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2025,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>The suitability of high\u2010power short\u2010duration (HPSD) cavo\u2010tricuspid isthmus ablation (CTI\u2010Abl) for electrophysiology (EP) trainees, as well as the underlying mechanisms of its efficacy, remain unknown. The aim of this study was to clarify the efficacy and safety of HPSD CTI\u2010Abl performed by EP trainees and assess lesion characteristics between HPSD and moderate\u2010power long duration (MPLD) ablations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Study 1: CTI\u2010Abl was performed by first\u2010 to fourth\u2010year EP trainees in consecutive 113 patients (67\u2009\u00b1\u200911 years, 27.2% female). Study cohort was historically divided into three groups: MPLD (30\u201335 W for up to 30 s) using TactiCath (TC\u2010MPLD, <jats:italic>N<\/jats:italic>\u2009=\u200938) and MPLD and HPSD (50 W for 12 s) using TactiFlex (TF\u2010MPLD, <jats:italic>N<\/jats:italic>\u2009=\u200923; TF\u2010HPSD, <jats:italic>N<\/jats:italic>\u2009=\u200952). Primary endpoint was first\u2010pass bidirectional isthmus block (BIB). Study 2: lesion geometries created by each ablation strategy were compared using an ex\u2010vivo model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Study 1: TF\u2010HPSD ablation strategy demonstrated a higher success rate of first\u2010pass BIB than MPLD protocol (TC\u2010MPLD, 58%; TF\u2010MPLD, 48%; TF\u2010HPSD, 94%, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), without any complications. TF\u2010HPSD group was associated with shorter total procedure and RF application times, as well as fewer ablation points and gaps, compared to the MPLD groups. Study 2: TF\u2010HPSD created greater lesion surface length, width, and area than MPLD strategies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>HPSD CTI\u2010Abl performed by EP trainees using TactiFlex SE catheter demonstrated a higher first\u2010pass BIB rate, shorter total procedure and RF application times, and fewer ablation points and gaps compared to the conventional method, without increasing complication rates.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.16516","type":"journal-article","created":{"date-parts":[[2024,12,12]],"date-time":"2024-12-12T07:15:06Z","timestamp":1733987706000},"page":"367-375","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Efficacy and Safety of High\u2010Power Short\u2010Duration Ablation for Cavo\u2010Tricuspid Isthmus With a Flexible\u2010Tip Temperature\u2010Controlled Power Regulation Catheter Performed by Electrophysiology Trainees"],"prefix":"10.1111","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2441-3593","authenticated-orcid":false,"given":"Hidehiro","family":"Iwakawa","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo Japan"},{"name":"Department of Cardiovascular Medicine Akita University Graduate School of Medicine Akita Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8473-7514","authenticated-orcid":false,"given":"Masateru","family":"Takigawa","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kosuke","family":"Nakada","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo 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