Table 2.

ACC/AHA Stages of HF.

Stages	Definitions	Examples
Stage A	At high risk for HF but without structural heart disease or symptoms of HF	Risk factors for HF like hypertension
Stage B	Structural heart disease but without signs or symptoms of HF	LV dysfunction, LV hypertrophy
Stage C	Structural heart disease with prior or current symptoms of HF	Most forms of chronic HF
Stage D	Refractory HF requiring specialized interventions	Advanced/end stage HF