{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T06:41:03Z","timestamp":1764312063726,"version":"3.46.0"},"reference-count":21,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,7,28]],"date-time":"2025-07-28T00:00:00Z","timestamp":1753660800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Arrhythmia"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Macroreentrant atrial tachycardias (MRAT) predominate the atrial arrhythmias in patients with operated heart disease, and advances in interventional electrophysiology and catheter ablation technology have pioneered a shift in their management.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We retrospectively analyzed clinical, procedural, and outcome data from a cohort of patients who had undergone radiofrequency (RF) ablation for MRAT (utilizing high\u2010density atrial mapping) following cardiac surgery for congenital or acquired heart disease.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Forty\u2010one patients underwent ablation for a MRAT from 2016 to 2023. These patients had a mean age of 50.17\u2009\u00b1\u200911.71\u2009years and had undergone cardiac surgical intervention a median of 18\u2009years prior to first presentation with atrial tachyarrhythmia. The commonest repaired lesion was a surgically corrected atrial septal defect. None of the studied patients had a left\u2010sided macro reentrant circuit. The patients were followed up for a median duration of 2\u2009years following ablation. Twenty\u2010five patients (60.9%) had CTI\u2010dependent atrial flutter (AFl). Using a strategy of high\u2010density activation and voltage mapping and entrainment mapping to define the tachycardia circuit, an acute success rate of 95.1% was noted. Our population continued to do well on medium\u2010term follow\u2010up, with 90.2% of patients tachycardia\u2010free at 2\u2009years. However, seven patients (17.1%) developed sinus bradycardia requiring pacing, and three patients (7.3%) developed incident atrial fibrillation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>A meticulous approach to MRAT mapping utilizing a combination of newer high\u2010density mapping catheters with entrainment mapping yields high rates of acute (95.1%) and medium\u2010term success (90.2%) in patients with antecedent cardiac surgery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/joa3.70146","type":"journal-article","created":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T04:09:10Z","timestamp":1753762150000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Clinical and Electrophysiological Characteristics of Patients Developing Macroreentrant Atrial Tachyarrhythmias Following Cardiac Surgery: A Retrospective Cohort Study"],"prefix":"10.1002","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7498-9112","authenticated-orcid":false,"given":"Nayani","family":"Makkar","sequence":"first","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sreevilasam P.","family":"Abhilash","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3313-3462","authenticated-orcid":false,"given":"Krishna Kumar","family":"Mohanan Nair","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mukund A.","family":"Prabhu","sequence":"additional","affiliation":[{"name":"Kasturba Medical College Manipal, Manipal Academy of Higher Education  Manipal Karnataka India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5456-9321","authenticated-orcid":false,"given":"Saikiran","family":"Kakarla","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jyothi","family":"Vijay","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-1901-5665","authenticated-orcid":false,"given":"Sudipta","family":"Mondal","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Valaparambil Kumar","family":"Ajit","sequence":"additional","affiliation":[{"name":"Kerala Institute of Medical Sciences  Thiruvanathapuram Kerala India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Narayanan","family":"Namboodiri","sequence":"additional","affiliation":[{"name":"Sree Chitra Tirunal Institute of Medical Sciences and Technology  Thiruvanathapuram Kerala 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