Diagnosis
Classifications
Table 2. Comparison of ACCF/AHA Stages of HF and NYHA
Functional Classifications
ACCF/AHA Stages of HF
NYHA Functional Classification
A
At high risk for HF but
without structural heart
disease or symptoms of HF
None
B
Structural heart disease but
without signs or symptoms
of HF
I
No limitation of physical activity.
Ordinary physical activity does not
cause symptoms of HF.
C
Structural heart disease with
prior or current symptoms
of HF
I
No limitation of physical activity.
Ordinary physical activity does not
cause symptoms of HF.
II
Slight limitation of physical activity.
Comfortable at rest, but ordinary
physical activity results in symptoms
of HF.
III
Marked limitation of physical activity.
Comfortable at rest, but less than
ordinary activity causes symptoms
of HF.
IV
Unable to carry on any physical
activity without symptoms of HF, or
symptoms of HF at rest.
IV
Unable to carry on any physical
activity without symptoms of HF, or
symptoms of HF at rest.
D
4
Refractory HF requiring
specialized interventions
