What is an early indicator of heart failure?

Weight gain is an early indicator of heart failure primarily due to fluid retention, which occurs when the heart's ability to pump effectively is compromised. This leads to increased pressure in the blood vessels, causing fluids to leak into surrounding tissues. As a result, patients may notice unintended weight gain due to this fluid accumulation. Monitoring weight is a critical aspect of managing patients with heart failure, as rapid increases can signify worsening heart function.

Chest pain, although significant in various cardiac conditions, is not a definitive early indicator of heart failure specifically. Decreased appetite can occur in heart failure due to various reasons, such as congestion of the gastrointestinal tract, but it is less specific or immediate compared to weight changes. A persistent cough may be present in heart failure, especially if there is pulmonary congestion, but it typically emerges after other symptoms have started. Thus, weight gain serves as a more immediate and clear early warning sign of heart failure.