A second nonrandomized observational study reported improved outcomes of AF catheter abla- tion among obese patients who enrolled in a weight loss program.S7.13-2 Observational studies have revealed that the degree of improvement in the AF type and symptoms were related to the degree of weight loss.S7.13-3,S7.13-8 Taken together, these studies support a treatment approach that addresses the risk factors for AF. ACC/AHA TASK FORCE MEMBERS Glenn N. Levine, MD, FACC, FAHA, Chair; Patrick T. O Gara, MD, MACC, FAHA, Chair-Elect; Jonathan L. Halperin, MD, FACC, FAHA, Immediate Past Chair*; Sana M. Al-Khatib, MD, MHS, FACC, FAHA; Joshua A. Beckman, MD, MS, FAHA; Kim K. Birtcher, PharmD, MS, AACC; Biykem Bozkurt, MD, PhD, FACC, FAHA*; Ralph G. Brindis, MD, MPH, MACC*; Joaquin E. Cigarroa, MD, FACC; Lesley H. Curtis, PhD, FAHA*; Anita Deswal, MD, MPH, FACC, FAHA; Lee A. Fleisher, MD, FACC, FAHA; Federico Gentile, MD, FACC; Samuel Gidding, MD, FAHA*; Zachary D. Goldberger, MD, MS, FACC, FAHA; Mark A. Hlatky, MD, FACC, FAHA; John Ikonomidis, MD, PhD, FAHA*; Jos A. Joglar, MD, FACC, FAHA; Laura Mauri, MD, MSc, FAHA*; Mariann R. Piano, RN, PhD, FAAN, FAHA; Susan J. Pressler, PhD, RN, FAHA*; Barbara Riegel, PhD, RN, FAHA*; Duminda N. Wijeysundera, MD, PhD PRESIDENTS AND STAFF American College of Cardiology C. Michael Valentine, MD, FACC, President Timothy W. Attebery, DSc, MBA, FACHE, Chief Execu- tive Officer William J. Oetgen, MD, MBA, FACC, FACP, Executive Vice President, Science, Education, Quality, and Pub- lishing MaryAnne Elma, MPH, Senior Director, Science, Educa- tion, Quality, and Publishing Amelia Scholtz, PhD, Publications Manager, Science, Education, Quality, and Publishing American College of Cardiology/ American Heart Association Katherine A. Sheehan, PhD, Director, Guideline Strat- egy and Operations Abdul R. Abdullah, MD, Senior Manager, Guideline Science Thomas S. D. Getchius, Manager, Guideline Science Zainab Shipchandler, MPH, Associate Guideline Advisor American Heart Association Ivor J. Benjamin, MD, President Nancy Brown, Chief Executive Officer Rose Marie Robertson, MD, FAHA, Chief Science and Medicine Officer Gayle R. Whitman, PhD, RN, FAHA, FAAN, Senior Vice President, Office of Science Operations Anne Leonard, MPH, RN, CCRC, FAHA, Senior Science and Medicine Advisor, Office of Science Operations Jody Hundley, Production and Operations Manager, Sci- entific Publications, Office of Science Operations ARTICLE INFORMATION This document was approved by the American College of Cardiology Clinical Policy Approval Committee, the American Heart Association Science Advisory and Coordinating Committee, and the Heart Rhythm Society Board of Trustees *Former Task Force member; current member during the writing effort. 