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It is an epicardially delimited triangular area by the left coronary arteries and the coronary venous circulation. Its deep myocardium correlates closely with the left coronary cusp, aortic\u2010mitral continuity, and right ventricular outflow tract (RVOT), complicating the anatomical relationship. Ventricular arrhythmias (VAs) originating from this area are common, accounting for 14.5% of all VAs origin from left ventricle. Specific electrocardiogram (ECG) characteristics may assist in locating LVS\u2010VAs pre\u2010procedure and facilitate procedure planning. However, catheter ablation of LVS\u2010VAs remains challenging because of anatomical constraints. This paper reviews the recent understanding of LVS anatomy, concludes ECG characteristics, and summarizes current mapping and ablation methods for LVS\u2010VAs.<\/jats:p>","DOI":"10.1111\/pace.14932","type":"journal-article","created":{"date-parts":[[2024,1,31]],"date-time":"2024-01-31T07:35:00Z","timestamp":1706686500000},"page":"242-252","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Mapping and ablation of ventricular arrhythmias arising from the left ventricular summit"],"prefix":"10.1111","volume":"47","author":[{"given":"Zhi\u2010Xiang","family":"Zhou","sequence":"first","affiliation":[{"name":"Department of Cardiology Second Affiliated Hospital of Wenzhou Medical University  Wenzhou Zhejiang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cheng","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Cardiology Second Affiliated Hospital of Wenzhou Medical 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