Table 3

NYHA classification

NYHA classLevel of impairment
INo limitation of physical activity. Ordinary physical activity does not cause undue breathlessness, fatigue or palpitations.
IISlight limitation of physical activity. Comfortable at rest but ordinary physical activity results in undue breathlessness, fatigue or palpitations.
IIIMarked limitation of physical activity. Comfortable at rest, but less than ordinary physical activity results in undue breathlessness, fatigue or palpitations.
IVUnable to carry out any physical activity without discomfort. Symptoms at rest can be present. If any physical activity is undertaken, discomfort is increased.
  • NYHA, New York Heart Association.