{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T18:18:32Z","timestamp":1789496312528,"version":"build-2803163510"},"reference-count":27,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"9","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circ: Arrhythmia and Electrophysiology"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND:<\/jats:title>\n                    <jats:p>Reentrant atrial tachycardias (ATs) are frequent after atrial switch for dextro-transposition of the great arteries and are associated with adverse prognosis. Catheter ablation is first-line therapy, yet long-term outcomes and predictors of recurrence remain poorly defined. Our aim was to characterize induced AT circuits, describe acute and long-term catheter ablation outcomes, and identify recurrence predictors in dextro-transposition of the great arteries.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS:<\/jats:title>\n                    <jats:p>Single-center ambispective cohort of consecutive adults with dextro-transposition of the great arteries undergoing a first AT ablation (2003\u20132025). Arrhythmias were mechanically induced with decremental pacing or extra stimuli. Acute success was defined as elimination of all clinical and reproducibly inducible tachycardias (cycle length &gt;200 ms), with bidirectional cavotricuspid isthmus block when applicable. Recurrence was defined as any documented AT &gt;30 seconds.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS:<\/jats:title>\n                    <jats:p>\n                      Thirty-three patients underwent 46 procedures. During the index procedure, 66 ATs were induced; 51 (83%) were characterized: 32 (63%) were cavotricuspid isthmus-dependent and 11 (22%) incisional. Cavotricuspid isthmus block was achieved in 84%; acute noninducibility in 73%. Median follow-up was 7.0 years (interquartile range, 2.5\u201310.4). Overall, 15 patients (45.5%) recurred; 1-year freedom was 75%. Recurrence was strongly associated with failed or uncertain acute efficacy, severely impaired systemic right ventricular fractional shortening \u226422%, prolonged PR interval (220 ms), and greater number of inducible ATs (all\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt;0.05). In multivariable modelling, these 4 variables yielded an optimism-corrected C-index of 0.85. Eleven (33%) underwent redo ablation; 8 achieved acute noninducibility, and only 3 recurred thereafter.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS:<\/jats:title>\n                    <jats:p>In dextro-transposition of the great arteries postatrial switch, cavotricuspid isthmus-dependent flutter is most common, but scar-related circuits are frequent. Catheter ablation is safe and acutely effective, but long-term recurrence remains substantial. Failed acute efficacy, severely impaired systemic right ventricle contractility, prolonged PR interval, and multiple inducible ATs identify patients at highest risk and may guide follow-up and referral for early repeat ablation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/circep.125.014811","type":"journal-article","created":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T18:00:27Z","timestamp":1789495227000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Long-Term Efficacy of Catheter Ablation for Reentrant Atrial Tachycardia in Dextro-Transposition of the Great Arteries Patients After Atrial Switch"],"prefix":"10.1161","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1220-0451","authenticated-orcid":true,"given":"Carlos A.","family":"\u00c1lvarez-Ortega","sequence":"first","affiliation":[{"name":"Cardiology Department, University Hospital La Paz (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."},{"name":"IdiPAZ: Hospital La Paz Institute for Health Research (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3805-6205","authenticated-orcid":true,"given":"Teba","family":"Gonz\u00e1lez-Ferrero","sequence":"additional","affiliation":[{"name":"Cardiology Department, University Hospital La Paz (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."},{"name":"IdiPAZ: Hospital La Paz Institute for Health Research (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-9188-3733","authenticated-orcid":true,"given":"Luc\u00eda","family":"Canales-Mu\u00f1oz","sequence":"additional","affiliation":[{"name":"Cardiology Department, University Hospital La Paz (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."},{"name":"IdiPAZ: Hospital La Paz Institute for Health Research (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., R.P.-P.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8091-8692","authenticated-orcid":true,"given":"Soraya","family":"Gonz\u00e1lez-Estri\u00e9gana","sequence":"additional","affiliation":[{"name":"Cardiology Department, University Hospital La Paz (C.A.A.-O., T.G.-F., L.C.-M., S.G.-E., J.D.-D., A.E.G.-G., J.R.-C., P.M.-C., C.M.-A., N.G.R., R.M.-G., 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