AHA/ACC/HRS GUIDELINE 2017 AHA/ACC/HRS Guideline for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society Circulation *Writing committee members are required to recuse themselves from voting on sections to which their specific rela- tionships with industry may apply; see Appendix 1 for detailed information. ACC/AHA Representative. HRS Rep- resentative. ACC/AHA Task Force on Performance Measures Liaison/HFSA Representative. ACC/AHA Task Force on Clinical Practice Guidelines Liaison. https://www.ahajournals.org/journal/circ ACC/AHA Task Force Members, see page e354 The American Heart Association requests that this document be cited as follows: Al-Khatib SM, Stevenson WG, Ackerman MJ, Bryant WJ, Callans DJ, Curtis AB, Deal BJ, Dickfeld T, Field ME, Fonarow GC, Gillis AM, Granger CB, Hammill SC, Hlatky MA, Joglar JA, Kay GN, Matlock DD, Myerburg RJ, Page RL. 2017 AHA/ACC/HRS guideline for management of patients with ventricular arrhythmias and the prevention of sudden cardiac death: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. Circulation. 2018;138:e272 e391. doi: 10.1161/CIR.0000000000000549. Developed in Collaboration With the Heart Failure Society of America CLINICAL STATEMENTS AND GUIDELINES TABLE OF CONTENTS Preamble e274 1. Introduction e275 1.1. Methodology and Evidence Review e275 1.2. Organization of the Writing Committee e276 1.3. Document Review and Approval e276 1.4. Scope of the Guideline e277 1.5. Abbreviations e279 2. Epidemiology e279 2.1. General Concepts e279 2.1.1. Premature Ventricular Complexes and Nonsustained VT e279 2.1.2. VT and VF During ACS e281 2.1.3. Sustained VT and VF Not Associated With ACS e281 2.2. Sudden Cardiac Death e281 2.2.1. Incidence of SCD e281 2.2.2. Population Subgroups and Risk Prediction e282 3. Mechanisms of VA e283 3.1. 