#CHEST Representative. **ACC/AHA Task Force on Performance Measures Representative. AAFP Representative. The American Heart Association requests that this document be cited as follows: Yancy CW, Jessup M, Bozkurt B, Butler J, Casey DE Jr, Colvin MM, Drazner MH, Filippatos GS, Fonarow GC, Givertz MM, Hollenberg SM, Lindenfeld J, Masoudi FA, McBride PE, Peterson PN, Stevenson LW, Westlake C. 2017 ACC/AHA/HFSA focused update of the 2013 ACCF/AHA guideline for the management of heart failure: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Failure Society of America. Circulation. 2017;136:e137 e161. DOI: 10.1161/CIR.0000000000000509. Yancy et al TABLE OF CONTENTS Preamble e138 Methodology and Evidence Review e140 Organization of the Writing Group e141 Document Review and Approval e141 Initial and Serial Evaluation of the HF Patient e141 Biomarkers for Prevention: Recommendation e142 Biomarkers for Diagnosis: Recommendation e142 Biomarkers for Prognosis or Added Risk Stratification: Recommendations e142 Treatment of Stages A to D e144 Pharmacological Treatment for Stage C HF With Reduced Ejection Fraction: 7.3.2.10. Renin-Angiotensin System Inhibition With Angiotensin- Converting Enzyme Inhibitor or Angiotensin Receptor Blocker or ARNI: Recommendations e144 Pharmacological Treatment for Stage C HFpEF: Recommendations e146 Important Comorbidities in HF e147 Hypertension (New Section) e149 Treating Hypertension to Reduce the Incidence of HF: Recommendation e149 Treating Hypertension in Stage C HFrEF: Recommendation e149 Treating Hypertension in Stage C HFpEF: Recommendation e149 9.6. Sleep-Disordered Breathing: Appendix 1. Author Relationships With Industry and Other Entities (Relevant) e156 Appendix 2. Reviewer Relationships With Industry and Other Entities (Comprehensive) e158 PREAMBLE Since 1980, the American College of Cardiology (ACC) and American Heart Association (AHA) have translat- ed scientific evidence into clinical practice guidelines (guidelines) with recommendations to improve cardio- vascular health. 