{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T05:06:33Z","timestamp":1779771993304,"version":"3.53.1"},"reference-count":13,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T00:00:00Z","timestamp":1779753600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82170361"],"award-info":[{"award-number":["82170361"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Cardiovasc. Med."],"abstract":"<jats:p>Cor triatriatum sinister (CTS) is a rare congenital cardiac anomaly that presents significant challenges for catheter ablation of atrial fibrillation (AF) due to its complex left atrial anatomy. We report the case of a 47-year-old man with persistent AF and CTS who successfully underwent radiofrequency catheter ablation. Intracardiac echocardiography was critical in guiding transseptal puncture and delineating the atrial chambers, while electroanatomic mapping revealed a high-voltage area rather than a low-voltage zone at the fibromuscular membrane. This case underscores the importance of advanced imaging and individualized ablation strategies in managing arrhythmias in structurally abnormal hearts.<\/jats:p>","DOI":"10.3389\/fcvm.2026.1777314","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T04:50:03Z","timestamp":1779771003000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Case Report: Catheter ablation of atrial fibrillation in a patient with cor triatriatum sinistrum: the pivotal role of intracardiac echocardiography and electroanatomic mapping"],"prefix":"10.3389","volume":"13","author":[{"given":"Mingjie","family":"Lin","sequence":"first","affiliation":[{"name":"State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Chinese National Health Commission, Chinese Academy of Medical Sciences and Shandong Province, Department of Cardiology, Qilu Hospital of Shandong University","place":["Jinan\/Qingdao, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nan","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Chinese National Health Commission, Chinese Academy of Medical Sciences and Shandong Province, Department of Cardiology, Qilu Hospital of Shandong University","place":["Jinan\/Qingdao, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Kong","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Chinese National Health Commission, Chinese Academy of Medical Sciences and Shandong Province, Department of Cardiology, Qilu Hospital of Shandong University","place":["Jinan\/Qingdao, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingquan","family":"Zhong","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Chinese National Health Commission, Chinese Academy of Medical Sciences and Shandong Province, Department of Cardiology, Qilu Hospital of Shandong University","place":["Jinan\/Qingdao, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Chinese National Health Commission, Chinese Academy of Medical Sciences and Shandong Province, Department of Cardiology, Qilu Hospital of Shandong University","place":["Jinan\/Qingdao, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,5,26]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"1197","DOI":"10.1136\/heartjnl-2019-314714","article-title":"Cor triatriatum sinistrum diagnosed in the adulthood: a systematic review","volume":"105","author":"Rudiene","year":"2019","journal-title":"Heart"},{"key":"B2","doi-asserted-by":"publisher","first-page":"e6371","DOI":"10.7759\/cureus.6371","article-title":"A systematic review of a long-forgotten cause of atrial fibrillation and stroke: cor triatriatum","volume":"11","author":"Ullah","year":"2019","journal-title":"Cureus"},{"key":"B3","doi-asserted-by":"publisher","first-page":"925","DOI":"10.1016\/j.hrcr.2025.06.025","article-title":"The feasibility and safety of cryoballoon ablation in an elderly patient with cor triatriatum sinister and persistent atrial fibrillation: a case report and a review","volume":"11","author":"Bakytzhanuly","year":"2025","journal-title":"Heart Rhythm Case Rep"},{"key":"B4","doi-asserted-by":"publisher","first-page":"330","DOI":"10.1097\/CRD.0000000000000626","article-title":"Cor triatriatum: a review","volume":"33","author":"Kilkenny","year":"2025","journal-title":"Cardiol Rev"},{"key":"B5","doi-asserted-by":"publisher","first-page":"2084","DOI":"10.1111\/pace.14371","article-title":"Catheter ablation of atrial fibrillation in patients with cor triatriatum sinister; 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