Which symptom is considered a moderate sign of heart failure?

A nocturnal cough is indeed recognized as a symptom associated with heart failure and often indicates pulmonary congestion resulting from the condition. In heart failure, the left ventricle may struggle to effectively pump blood, causing increased pressure in the pulmonary circulation. This can lead to fluid leakage into the lungs, especially when the person is lying down, triggering a cough that typically occurs at night, hence the term "nocturnal cough."

While peripheral edema, weight gain, and dyspnea are also relevant symptoms of heart failure, they can vary in severity and implications. For instance, peripheral edema usually signifies more advanced heart failure and weight gain can suggest fluid retention. Dyspnea, particularly during exertion or when lying flat, is typically considered a more severe symptom indicating significant impairment in cardiac function. Nocturnal cough, being a specific indicator of pulmonary congestion, reflects the moderate level of compromise that can be associated with heart failure.

Ultimately, recognizing nocturnal cough as a moderate sign helps in monitoring the condition's progression and can guide therapeutic interventions effectively.