What stage of heart failure involves symptoms with ordinary exertion?

In heart failure classification, symptoms associated with ordinary exertion characterize Class II. This class indicates that patients experience mild limitations in physical activity; they are comfortable at rest, but ordinary activities—like walking up stairs or performing household chores—can lead to fatigue, palpitations, or dyspnea.

Understanding the classification system is crucial, as it helps in assessing the severity of heart failure and determining appropriate management strategies. Therefore, recognizing that Class II is specifically defined by symptoms occurring with ordinary exertion highlights its significance in the clinical assessment of heart failure.