What is a primary indicator of class IV CHF?

In class IV congestive heart failure (CHF), a primary indicator is the presence of symptoms even at rest. This classification indicates the most severe form of heart failure, where individuals exhibit severe limitations in physical activity due to symptoms such as dyspnea, fatigue, or other signs of heart failure even when they are inactive.

Patients in this class often experience significant discomfort; their condition hinders them from engaging in any physical activity without distress. This symptomatic nature at rest underscores the profound impact of the heart's inability to adequately pump blood, leading to a poor quality of life and increased morbidity risk.

Understanding this classification can help guide appropriate management strategies, including medication adjustments and possible consideration for advanced heart failure therapies.