Funding Support and Author Disclosures The EMERGE LAA study was funded by Abbott. The views or opinions presented in this document are solely those of the authors and do not represent those of the American College of Cardiology, the American College of Cardiology Foundation, or the National Cardiovascular Data Registry. Dr Ellis has received institutional research grants from Boehringer-Ingelheim Inc., Medtronic Inc., and Boston Scientific Inc; and has received consulting/advisory fees from Medtronic Inc., Abbott Medical Inc., Boston Scientific Inc., and Atricure Inc. Dr Lakkireddy has received research and educational grants to the institution from Abbott, Atricure, Alta Thera, Medtronic, Biosense Webster, Biotronik, and Boston Scientific; and has also received speaker honorarium from Abbott, Medtronic, Biotronik and Boston Scientific. Dr Makkar is a consultant for Abbott and Biosense Webster. Dr Alkhouli serves as a consultant to Boston Scientific and Abbott. Dr Coylewright is a consultant for Edwards Lifesciences, Alleviant, Boston Scientific and Medtronic; and has been a proctor for Boston Scientific. Dr Agarwal has served on speaker bureaus for Abbott, Boston Scientific, and Medtronic; and has been a proctor for Abbott, Boston Scientific, Medtronic, and Edwards Lifesciences. Dr Chinitz has received a speaker honorarium; and has been a consultant for Biosense Webster, Abbott, Medtronic, Biotronik, Impulse Dynamics, and Boston Scientific. Dr Turagam is a consultant for Boston Scientific, Medtronic, Abbott, Biosense Webster, and Sanofi. Dr Percell is on the speaker bureaus for Abbott, Siemens and Janssen as well as a proctor for Abbott. Dr Freeman has received grants from the National Heart, Lung, and Blood Institute and the American College of Cardiology NCDR during the conduct of the study; and personal fees from Boston Scientific, Medtronic, PaceMate, and Biosense Webster outside the submitted work. Dr Coylewright has reported that she has no relationships relevant to the contents of this paper to disclose.