NYHA grading of symptoms in chronic heart failure
| NYHA Class | Description |
|---|---|
| Class I | No symptoms and limitations in ordinary physical activity. |
| Class II | Slight limitation of physical activity. Ordinary physical activity results in mild symptoms such as fatigue, shortness of breath and angina. |
| Class III | Marked limitation of physical activity. Less than ordinary physical activity leads to symptoms. |
| Class IV | Severely limited. Experiences symptoms even at rest. |