Stage B, a Pre-Cursor of Heart Failure, an Issue of Heart Failure Clinics

In the joint American College of Cardiology /American Heart Association classification system, Stage B heart failure refers to patients with structural heart disease but no symptoms of heart failure. Preventing progression of heart failure in Stage B patients is a central concern to heart failure specialists, so two issues have been devoted to this topic. Part I focuses on an understanding of structural heart disease and the factors that cause progression from risk of heart failure to development of structural changes.