In managing patients, the responsible clinician s judgment remains paramount. Presidents and Staff American College of Cardiology Mary Norine Walsh, MD, MACC, President Shalom Jacobovitz, Chief Executive Officer William J. Oetgen, MD, MBA, FACC, Executive Vice President, Science, Education, Quality, and Publishing MaryAnne Elma, MPH, Senior Director, Science, Education, 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 Strategy and Operations Abdul R. Abdullah, MD, Science and Medicine Advisor Naira Tahir, MPH, Associate Guideline Advisor American Heart Association John J. Warner, 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 Jody Hundley, Manager, Production and Operations, Scientific Publications, Office of Science Operations Whelton et al 2017 High Blood Pressure Clinical Practice Guideline e79 References Preamble P-1. Gibbons GH, Harold JG, Jessup M, et al. The next steps in devel- oping clinical practice guidelines for prevention. Circulation. 2013;128:1716 7. P-2. Gibbons GH, Shurin SB, Mensah GA, et al. Refocusing the agenda on cardiovascular guidelines: an announcement from the National Heart, Lung, and Blood Institute. Circulation. 2013;128: 1713 5. P-3. Committee on Standards for Developing Trustworthy Clinical Practice Guidelines, Institute of Medicine (U.S.). Clinical Practice Guidelines We Can Trust. Washington, DC: The NationalAcademies Press; 2011. P-4. Committee on Standards for Systematic Reviews of Comparative Effectiveness Research, Institute of Medicine (U.S.). Finding What Works in Health Care: Standards for Systematic Reviews. Washington, DC: The National Academies Press; 2011. P-5. Anderson JL, Heidenreich PA, Barnett PG, et al. 