{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T07:57:42Z","timestamp":1773647862208,"version":"3.50.1"},"reference-count":19,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T00:00:00Z","timestamp":1765929600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T00:00:00Z","timestamp":1765929600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The occurrence of a left free\u2010wall (LFW) accessory pathway (AP) with concentric activation sequences in the coronary sinus (CS) during orthodromic atrioventricular reentrant tachycardia (OAVRT) is an uncommon phenomenon.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Using three\u2010dimensional (3D) mapping system in eight patients with LFW\u2010AP (mean age 44\u00b19.9 years), we systematically analyzed mitral annular (MA) activation during OAVRT.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The primary location of the APs was in the left lateral region in seven patients. The tachycardia, characterized by varying CS sequences, remained sustainable in three patients and was inducible in four patients following the initial ablation at the earliest retrograde atrial insertions. The tachycardia cycle length (TCL) was comparable to the baseline TCL (345.4\u00b194.2\u00a0 vs. 345.6\u00b193.4\u00a0ms;\n                      <jats:italic>p<\/jats:italic>\n                      = 0.99). Moreover, the tachycardia was terminated by ablating the earliest retrograde atrial activation region adjacent to the initial ablation site. One patient with a history of left lateral AP ablation exhibited mitral isthmus (MI) block, and the left anterior AP was successfully ablated. Following a mean follow\u2010up of 50.5 months, no recurrence of tachycardia was reported by any patient.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>LFW\u2010AP with concentric CS activation sequences represents a distinctive electrophysiological entity, our study demonstrates detailed mapping in the vicinity of the MA is imperative to localize the secondary atrial insertion site of the AP or to identify multiple APs in close proximity to the initial ablation site.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Clinical Trial Registration<\/jats:title>\n                    <jats:p>This retrospective study does not require clinical trial registration.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/pace.70099","type":"journal-article","created":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T12:38:35Z","timestamp":1765975115000},"page":"97-104","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Electrophysiological Characteristics of Coronary Sinus Activation Sequence Alteration During Left Lateral AP Ablation"],"prefix":"10.1111","volume":"49","author":[{"given":"Qing","family":"Wang","sequence":"first","affiliation":[{"name":"Cardiology Division the First Affiliated Hospital of Nanjing Medical University  Nanjing Jiangsu China"},{"name":"Department of Cardiology the Fourth Affiliated Hospital of Nanjing Medical University  Nanjing Jiangsu China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangao","family":"Ji","sequence":"additional","affiliation":[{"name":"Cardiology Division the First Affiliated Hospital of Nanjing Medical University  Nanjing Jiangsu 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