NYHA CLASSIFICATION

The NYHA (New York Heart Association) Functional Classification is a system used to assess the functional capacity of patients with heart failure. It classifies patients into one of four categories based on their symptoms and limitations during physical activity:

NYHA Class I: Patients with cardiac disease but without resulting limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation, dyspnea (shortness of breath), or anginal pain.

NYHA Class II: Patients with cardiac disease resulting in slight limitation of physical activity. They are comfortable at rest. However, ordinary physical activity results in fatigue, palpitation, dyspnea, or anginal pain.

NYHA Class III: Patients with cardiac disease resulting in marked limitation of physical activity. They are comfortable at rest. However, less than ordinary physical activity causes fatigue, palpitation, dyspnea, or anginal pain.

NYHA Class IV: Patients with cardiac disease resulting in inability to carry on any physical activity without discomfort. Symptoms of cardiac insufficiency may be present at rest, and discomfort is increased with any physical activity.

The NYHA classification is useful in assessing the severity of heart failure, guiding treatment decisions, and predicting outcomes. It should be noted that the NYHA classification is a subjective assessment and can vary depending on the patient's self-reporting of symptoms and the clinician's interpretation