{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T19:01:01Z","timestamp":1777748461817,"version":"3.51.4"},"reference-count":32,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T00:00:00Z","timestamp":1764806400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Cardiovasc. Med."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Cavotricuspid isthmus (CTI) ablation is the preferred treatment for typical atrial flutter, performed using various techniques. This study aimed to compare procedural and follow-up data between point-by-point and continuous \u201cdragging\u201d radiofrequency (RF) catheter ablation methods.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      This retrospective, single-center study included 121 consecutive patients who underwent first-time RF CTI ablation for typical atrial flutter between January 2023 and August 2024. Patients were assigned to point-by-point (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200949) or continuous dragging (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200972) groups. All procedures were performed under conscious sedation using irrigated-tip catheters and intracardiac echocardiography. Patients with prior CTI ablation, cardiac surgery, or concomitant ablation were excluded. Procedural and follow-up outcomes were compared between groups.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The continuous dragging technique significantly shortened the time from the first to last ablation [12 (6; 27)\u2005min vs. 18 (11; 32)\u2005min;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.05] and the time from the first ablation to the first CTI block [9 (8; 17)\u2005min vs. 13 (8; 25)\u2005min;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.01]. Additionally, total ablation time [484 (285; 774)\u2005s vs. 704 (449; 955)\u2005s;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.01] and energy usage [20,613 (11,191.5; 33,257.3) J vs. 25,717 (17,251.8; 36,420)\u2005J;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.05] were lower in the dragging group. The dragging technique also increased the first pass block rate (69.4% vs. 46.2%;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&amp;lt;\u20090.01). There was no significant difference in overall procedure time [55 (46; 66) min vs. 58.5 (45; 72) min;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.46], fluoroscopy duration (41\u2009\u00b1\u20096\u2005s vs. 55\u2009\u00b1\u20098\u2005s;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.14), or acute reconnection rate (27.8% vs. 30.8%;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.80). Both groups achieved a 100% acute success rate with no major complications. There was no significant difference in the rate of recurrence between the two groups (2.77% vs. 2.04%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20091.0) during the long-term follow-up (13.4\u2009\u00b1\u20093.8 months).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The continuous \u201cdragging\u201d RF ablation technique for CTI ablation in typical atrial flutter enhances procedural outcomes compared to the point-by-point method, demonstrating reduced ablation time, lower energy consumption, and a higher first pass block rate, all without compromising efficacy or safety.<\/jats:p>\n                  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