{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T09:44:34Z","timestamp":1770889474771,"version":"3.50.1"},"reference-count":29,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2023,10,19]],"date-time":"2023-10-19T00:00:00Z","timestamp":1697673600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cathet Cardio Intervent"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Alcohol septal ablation (ASA) has been shown to increase the neo\u2010left ventricular outflow tract (LVOT) area before transcatheter mitral valve replacement (TMVR) but there is little literature on its success and use with dedicated devices.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>To describe our experience with preemptive ASA to increase the predicted neo\u2010LVOT area and its utility with both dedicated TMVR devices and balloon\u2010expandable valves.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>All patients who underwent ASA for TMVR candidacy in our center between May 2018 and October 2022 and had computed tomography\u00a0(CT) scans done before and after ASA were included. Each CT was assessed for the minimum predicted neo\u2010LVOT area at end\u2010systole, using a virtual valve of the desired TMVR device for each patient. The primary outcome was an increase in the predicted neo\u2010LVOT area after ASA that was deemed sufficient for safe implantation of the desired TMVR device. The secondary outcome was the absence of acute LVOT obstruction after TMVR.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 12 patients underwent ASA and all but 1 (<jats:italic>n<\/jats:italic>\u2009=\u200911, 91.6%) achieved the primary outcome of having sufficient predicted neo\u2010LVOT area to proceed with TMVR. The mean increase in neo\u2010LVOT area after ASA was 126\u2009\u00b1\u200964\u2009mm<jats:sup>2<\/jats:sup> (median 119.5, interquartile range: 65.0\u2013163.5\u2009mm<jats:sup>2<\/jats:sup>). Two patients (16.7%) required a permanent pacemaker after ASA. Nine patients went on and underwent TMVR with their respective devices and none had LVOT obstruction after the procedure. Among the remaining three patients, one had insufficient neo\u2010LVOT clearance after ASA, one had unrelated mortality before TMVR, and one had advanced heart failure before TMVR.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In appropriately selected patients and at centers experienced with ASA, preemptive ASA can achieve sufficient neo\u2010LVOT clearance for TMVR with a variety of devices in approximately 90% of patients.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ccd.30879","type":"journal-article","created":{"date-parts":[[2023,10,19]],"date-time":"2023-10-19T09:11:16Z","timestamp":1697706676000},"page":"1341-1347","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Preemptive alcohol septal ablation prior to transcatheter mitral valve replacement"],"prefix":"10.1002","volume":"102","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8717-3614","authenticated-orcid":false,"given":"Ningyan","family":"Wong","sequence":"first","affiliation":[{"name":"Advanced Cardiac Valve Center University of Virginia Charlottesville Virginia USA"},{"name":"Department of Cardiology National Heart Centre Singapore Singapore City Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. 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