Class I: No limitation of ordinary physical activity. |
Class II: Mild limitation of ordinary physical activity. No discomfort at rest. |
Class III: Marked limitation of physical activity even with less than ordinary activity. No discomfort at rest. |
Class IV: Unable to perform any physical activity and symptomatic even at rest. |
Limitations to physical activity in each class may be due to increased dyspnea,
chest pain, fatigue or syncope
|