What is a characteristic of NYHA Class II heart failure?

In NYHA Class II heart failure, patients typically experience mild symptoms with moderate exertion, such as during yard work or climbing stairs. This categorization is crucial in understanding the functional capacity of individuals with heart failure. Patients in this class usually do not have symptoms at rest, making it an important distinction in evaluating heart failure severity.

While they may be able to perform light activities without issue, the hallmark of Class II is that symptoms emerge when engaging in activities that are more demanding than normal daily routines. This means that mild symptoms during strenuous tasks, such as shortness of breath or fatigue, are a characteristic feature of this class, as it highlights the limitations that arise as a patient's physical demands increase.