Adherence to recommendations can be enhanced by shared decision-making between clinicians and patients, with patient engagement in selecting in- terventions on the basis of individual values, preferences, and associated conditions and comorbidities. Methodology and Modernization The ACC/AHA Task Force on Clinical Practice Guidelines (Task Force) continuously reviews, updates, and modi- fies guideline methodology on the basis of published standards from organizations, including the Institute of and on the basis of internal reevaluation. Similarly, the presentation and delivery of guidelines are reevaluated and modified on the basis of evolving tech- nologies and other factors to facilitate optimal dissemi- nation of information to healthcare professionals at the point of care. Toward this goal, this guideline continues the intro- duction of an evolved format of presenting guideline recommendations and associated text called the mod- ular knowledge chunk format. Each modular chunk includes a table of related recommendations, a brief synopsis, recommendation-specific supportive text, and when appropriate, flow diagrams or additional tables. References are provided at the end of the document in their respective sections. Additionally, this format will facilitate seamless updating of guidelines with fo- cused updates as new evidence is published, as well as content tagging for rapid electronic retrieval of related recommendations on a topic of interest. This evolved approach format was instituted when this guideline was near completion; therefore, the present document represents a transitional format that best suits the text as written. Future guidelines will fully implement this format, including provisions for limiting the amount of text in a guideline. 