{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T14:40:20Z","timestamp":1782744020565,"version":"3.54.5"},"reference-count":23,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2021,1,24]],"date-time":"2021-01-24T00:00:00Z","timestamp":1611446400000},"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":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Patients with prior cardiac surgery may represent a subgroup of patients with ventricular tachycardia (VT) that may be more difficult to control with catheter ablation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We evaluated 1901 patients with ischemic and nonischemic cardiomyopathy who underwent VT ablation at 12 centers. Clinical characteristics and VT radiofrequency ablation procedural outcomes were assessed and compared between those with and without prior cardiac surgery. Kaplan\u2013Meier analysis was used to estimate freedom from recurrent VT and survival.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were 578 subjects (30.4%) with prior cardiac surgery identified in the cohort. Those with prior cardiac surgery were older (66.4\u2009\u00b1\u200911.0 years vs. 60.5\u2009\u00b1\u200913.9 years, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01), with lower left ventricular ejection fraction (30.2\u2009\u00b1\u200911.5% vs. 34.8\u2009\u00b1\u200913.6%, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01) and more ischemic heart disease (82.5% vs. 39.3%, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01) but less likely to undergo epicardial mapping or ablation (9.0% vs. 38.1%, <jats:italic>p<\/jats:italic>&lt;.01) compared to those without prior surgery. When epicardial mapping was performed, a significantly greater proportion required surgical intervention for access (19\/52 [36.5%] vs. 14\/504 [2.8%]; <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01). Procedural complications, including epicardial access\u2010related complications, were lower (5.7% vs. 7.0%, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01) in patients with versus without prior cardiac surgery. VT\u2010free survival (75.1% vs. 74.1%, <jats:italic>p<\/jats:italic>\u2009=\u2009.805) and survival (86.5% vs. 87.9%, <jats:italic>p<\/jats:italic>\u2009=\u2009.397) were not different between those with and without prior heart surgery, regardless of etiology of cardiomyopathy. VT recurrence was associated with increased mortality in patients with and without prior cardiac surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Despite different clinical characteristics and fewer epicardial procedures, the safety and efficacy of VT ablation in patients with prior cardiac surgery is similar to others in this cohort. The incremental yield of epicardial mapping in predominant ischemic cardiomyopathy population prior heart surgery may be low but appears safe in experienced centers.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.14849","type":"journal-article","created":{"date-parts":[[2020,12,24]],"date-time":"2020-12-24T14:18:22Z","timestamp":1608819502000},"page":"409-416","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Catheter ablation of ventricular tachycardia in patients with prior cardiac surgery: An analysis from the International VT Ablation Center Collaborative Group"],"prefix":"10.1111","volume":"32","author":[{"given":"Martin","family":"Aguilar","sequence":"first","affiliation":[{"name":"Division of Cardiovascular Medicine Brigham and Women's Hospital  Boston Massachusetts USA"},{"name":"Department of Medicine Harvard Medical School  Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Usha B.","family":"Tedrow","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Medicine Brigham and Women's Hospital  Boston Massachusetts USA"},{"name":"Department of Medicine Harvard Medical School  Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wendy S.","family":"Tzou","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Medicine, Cardiac Electrophysiology University of Colorado School of Medicine  Aurora Colorado USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8032-4424","authenticated-orcid":false,"given":"Roderick","family":"Tung","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Medicine, Center for Arrhythmia Care University of Chicago  Chicago Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David S.","family":"Frankel","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Medicine, Cardiac Electrophysiology Hospital of the University of Pennsylvania  Philadelphia Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0023-9666","authenticated-orcid":false,"given":"Pasquale","family":"Santangeli","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Medicine, Cardiac Electrophysiology Hospital of the University of Pennsylvania  Philadelphia Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marmar","family":"Vaseghi","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine David Geffen School of Medicine at UCLA  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T. Jared","family":"Bunch","sequence":"additional","affiliation":[{"name":"Cardiovascular Medicine Division University of Utah School of Medicine  Salt Lake City Utah USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6508-4047","authenticated-orcid":false,"given":"Luigi","family":"Di Biase","sequence":"additional","affiliation":[{"name":"Montefiore\u2010Einstein Center for Heart and Vascular Care, Montefiore Medical Center Albert Einstein College of Medicine  Bronx New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Venkatakrishna N.","family":"Tholakanahalli","sequence":"additional","affiliation":[{"name":"Division of Cardiology, VA Medical Center, Minneapolis MN &amp; University of Minnesot, Department of Medicine  Minneapolis Minnesota USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1492-2693","authenticated-orcid":false,"given":"Dhanunjaya","family":"Lakkireddy","sequence":"additional","affiliation":[{"name":"The Kansas City Heart Rhythm Institute  Overland Park Kansas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timm","family":"Dickfeld","sequence":"additional","affiliation":[{"name":"Division of Cardiology Baltimore VA Medical Center  Baltimore Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. Peter","family":"Weiss","sequence":"additional","affiliation":[{"name":"Cardiac Electrophysiology Banner \u2010 University Medicine Heart Institute  Phoenix Arizona USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0721-6827","authenticated-orcid":false,"given":"Nilesh","family":"Mathuria","sequence":"additional","affiliation":[{"name":"Department of Medicine Baylor College of Medicine  Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7751-6871","authenticated-orcid":false,"given":"Pasquale","family":"Vergara","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit and Electrophysiology Laboratories  Milano Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shiro","family":"Nakahara","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine David Geffen School of Medicine at UCLA  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason S.","family":"Bradfield","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine David Geffen School of Medicine at UCLA  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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