What is a common sign of left-heart failure in patients?

Crackles in the lung bases are commonly associated with left-heart failure due to fluid accumulation in the pulmonary circulation. When the left side of the heart is unable to effectively pump blood, this can lead to increased pressures in the pulmonary capillaries, causing fluid to leak into the alveoli. This fluid accumulation results in pulmonary congestion, which is best heard through crackles or rales during a lung examination.

The presence of crackles is an important clinical sign that suggests heart failure exacerbation, as it indicates that pulmonary congestion is present and that the respiratory system is being affected by the compromised cardiac function. Management of left-heart failure typically focuses on addressing both the heart's pumping ability and alleviating the fluid overload, which is why recognizing this sign is crucial for healthcare providers.