ARTICLE IN PRESSJACC:CARDIOVASCULAR IN TERVEN TIONSV0L.■.N0.■.20232023 SOCIETY FOR CARDIOVASCULAR ANGIOGRAPHY AND INTERVENTIONS FOUND ATION.HEART RHYTHM SOCIETY AND AMERICAN COLLEGE OF CARDIOLOGY.PUBLISHED BY ELSEVIERINC.THIS IS AN OPEN ACCESS ARTICLE UNDER THE CC BY-NC-ND LICENSE (http:/creativecommons.org/licenses/by-nc-nd/4.0/)WHICH PERMITS USE AND DIS TRIBUTION IN ANYMEDIUM.PROVIDED THE ORIGINAL WORKIS PROPERLY CITED.THE USE IS NON-COMMERCIAL ANDNO MODIFICATIONS OR ADAPTA TIONS ARE MADE.STANDARDS AND GUIDELINESSCAl/HRS Expert ConsensusStatement on TranscatheterLeft Atrial Appendage ClosureJacqueline Saw,MD,FSCAI,ChairAndrew M.Goldsweig,MD,MS,Mark Reisman,MD,FSCAFDavid R.Holmes,MD,FSCAI,FSCAIMatthew William Sherwood,MD,Vice-ChairbClifford J.Kavinsky,MD,PuD,MHS,FSCAPMSCAIZoltan G.Turi,MD,MSCAIkJoao L.Cavalcante,MDIssam D.Moussa,MD,MBA,FSCAISDee Dee Wang,MD,FSCAI!James V.Freeman,MD,MPH,MSThomas M.Munger,MDbBrian K.Whisenant,MD,FSCAIMatthew J.Price,MD,FSCAIhABSTRACTExclusion of the left atrial appendage to reduce thromboembolic risk related to atrial fibrillation was first performedsurgically in 1949.Over the past 2 decades,the field of transcatheter endovascular left atrial appendage closure (LAAC)has rapidly expanded,with a myriad of devices approved or in clinical development.The number of LAAC proceduresperfomed in the United States and worldwide has increased exponentially since the Food and Drug Administrationapproval of the WATCHMAN (Boston Scientific)device in 2015.The Society for Cardiovascular AngiographyInterventions (SCAl)has previously published statements in 2015 and 2016 providing societal overview of the technologyand institutional and operator requirements for LAAC.Since then,results from several important clinical trials and reg-istries have been published,technical expertise and clinical practice have matured over time,and the device and imagingtechnologies have evolved.Therefore,SCAl prioritized the development of an updated consensus statement to providerecommendations on contemporary,evidence-based best practices for transcatheter LAAC focusing on endovasculardevices.(J Am Coll Cardiol Intv 2023;)2023 Society for Cardiovascular Angiography and InterventionsFoundation,Heart Rhythm Society and American College of Cardiology,published by Elsevier Inc.This is an open accessarticle under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)which permits use anddistribution in any medium,provided the original work is properly cited,the use is non-commercial and no modifications oradaptations are made.Endorsement:This statement was endorsed by the American College of Cardiology and the Society of Cardiovascular Computed Tomography.From the"Division of Cardiology,Vancouver General Hospital,University of British Columbia,Canada;Department of Cardiovascular Medicine,MayoClinic Health System Rochester,Rochester,Minnesota:Department of Cardiology,Minneapolis Heart Institute,Minneapolis,Minnesota;section ofCardiovas