A seemingly innocuous cough, especially one that disrupts sleep, could signal a serious underlying health issue – heart failure – according to cardiologist Dr. Dmitry Yaranov. Frequently enough dismissed as a common cold or allergy, a persistent cough can be a key symptom of fluid buildup in the lungs, a frequent and perhaps life-threatening complication of heart failure. Recognizing this subtle indicator is critical for prompt diagnosis and improved patient outcomes,particularly as heart failure cases continue to rise among aging populations.
November 24, 2025, 5:00 PM
A persistent cough, particularly one that occurs during sleep, can be an unexpected sign of heart failure, according to cardiologist Dr. Dmitry Yaranov.
Yaranov explained that this type of ongoing cough is often caused by fluid buildup in the lungs, a common complication of heart failure that can lead to treatment challenges.
When Should a Cough Prompt a Check-Up?
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Congestive heart failure (CHF) develops when the heart is unable to pump enough blood to meet the body’s needs, according to Times Now News. This can cause blood and fluids to back up into the lungs and legs. Fluid accumulation in the lungs, known as pulmonary edema, is a serious and potentially life-threatening condition.
A cough that worsens when lying down isn’t always a sign of a respiratory issue; sometimes, it indicates the heart is struggling to keep up. Recognizing these subtle signs is crucial for early diagnosis and intervention.
When to Seek Medical Attention
Consult a doctor if you experience a persistent cough with no known cause.
Pay particular attention if the cough is accompanied by symptoms such as chest pain, irregular heartbeat, swelling in the ankles and feet, or unexplained weight gain.
Over-the-counter decongestants containing pseudoephedrine and phenylephrine may raise blood pressure and worsen heart failure symptoms, so caution is advised.
Understanding Heart Failure
Heart failure is a chronic condition in which the heart can’t pump blood efficiently enough to meet the body’s needs. While the heart continues to function, its inability to circulate sufficient blood leads to a buildup in other parts of the body, most commonly the lungs and extremities.
Other Symptoms of Heart Failure
In addition to coughing, other symptoms of congestive heart failure include:
Shortness of breath
Waking up short of breath at night
Severe chest pain
Palpitations
Fatigue
Swelling in the ankles, feet, and abdomen
Weight gain
Nocturia (needing to urinate frequently at night)
Bloating
Loss of appetite
Stomach discomfort
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