{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T23:17:35Z","timestamp":1785539855314,"version":"3.56.0"},"reference-count":24,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2023,6,6]],"date-time":"2023-06-06T00:00:00Z","timestamp":1686009600000},"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":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2023,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Catheter ablation is an established therapeutic strategy to treat scar\u2010related macroreentry atrial tachycardia (MAT). However, the scar properties and arrhythmogenicity and the reentry type have not been clearly defined.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and Results<\/jats:title><jats:p>A total of 122 patients with scar\u2010related MAT were enrolled in this study. The atrial scars were classified into two categories: spontaneous scars (Group A: <jats:italic>n<\/jats:italic>\u00a0=\u00a028) and iatrogenic scars (Group B: <jats:italic>n<\/jats:italic>\u00a0=\u00a094). According to the relationship between scar location and the reentry circuit, MAT was described as scar pro\u2010flutter MAT, scar\u2010dependent MAT, and scar\u2010mediated MAT. The reentry type of MAT was significantly different between Groups A and B: pro\u2010flutter (40.5%\u00a0vs. 62.0%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.02), scar\u2010dependent AT (40.5%\u00a0vs. 13.0%, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.001), and scar\u2010mediated AT (19.0%\u00a0vs. 25.0%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.42). After a median follow\u2010up of 25 months, 21 patients with AT recurrence were observed. Compared with the spontaneous group, there was a lower recurrence rate of MAT in the iatrogenic group (28.6%\u00a0vs. 10.6%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.03).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Scar\u2010related MAT has three reentry types, and the proportion of each type varies with the scar properties and its arrhythmogenic basis. Optimization of the ablation strategy based on the scar properties to improve the long\u2010term outcome of catheter ablation of MAT is necessary.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pace.14746","type":"journal-article","created":{"date-parts":[[2023,6,7]],"date-time":"2023-06-07T13:01:35Z","timestamp":1686142895000},"page":"592-597","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Scar\u2010related atrial macroreentries: Different arrhymogenic basis generates different reentry type"],"prefix":"10.1111","volume":"46","author":[{"given":"Lishang","family":"Zhai","sequence":"first","affiliation":[{"name":"Division of Cardiology the First Affiliated Hospital of Nanjing Medical University  Nanjing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongwu","family":"Chen","sequence":"additional","affiliation":[{"name":"Division of Cardiology the First Affiliated Hospital of Nanjing Medical 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