New York Heart Association (NYHA) Functional Classification for Heart Failure
Stratifies severity of heart failure by symptoms.
When to Use
No limitation of physical activity; ordinary physical activity does not cause undue fatigue, palpitation, or dyspnea
Slight limitation of physical activity; comfortable at rest; ordinary physical activity results in fatigue, palpitation, or dyspnea
Marked limitation of physical activity; comfortable at rest; less than ordinary activity causes fatigue, palpitation, or dyspnea
Unable to carry on any physical activity without discomfort; symptoms of heart failure at rest; if any physical activity is undertaken, discomfort increases
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