A heart failure cough is a persistent cough in someone with late- or end-stage congestive heart failure. The cough may sound like whistling, be "wet," and be accompanied by mucus.
A heart failure cough may indicate a potentially serious health concern. Sometimes, a heart failure cough (sometimes called a "cardiac cough" or "cardiac asthma") may be a sign that your condition is worsening or your medications aren't working as well as they should.
:max_bytes(150000):strip_icc():format(webp)/coughing-and-heart-failure-cardiac-cough-explained-3896488_final-3f0722726317417fa64ac62ec3acb0ee.jpg)
Verywell / Laura Porter
What Are the Symptoms of a Cardiac Cough?
The symptoms of a cardiac cough vary depending on the underly cause. Even so, there are characteristic signs and symptoms to watch out for.
These include:
- A persistent cough with pink, frothy sputum (hemoptysis)
- Shortness of breath (dyspnea)
- Wheezing breaths
- Rapid, shallow breathing (tachypnea)
- Difficulty breathing when lying down (orthopnea)
- Crackling sounds in the lungs (rales)
- Nighttime awakenings with a drowning sensation (paroxysmal nocturnal dyspnea)
You may experience other symptoms of heart failure as well, including chronic fatigue, rapid or irregular heartbeats, and swelling of the feet and ankles.
Causes of Cardiac Coughing
Congestive heart failure (CHF) occurs when the heart is less able to pump blood efficiently to meet the body's needs. When this happens, blood and fluids start to back up and collect in the lungs and legs.
The buildup of fluids in the lungs can lead to a serious medical condition known as pulmonary edema. One of the early signs of pulmonary edema is a persistent cough.
In people with CHF, a cardiac cough may be a sign of different things, including:
- Worsening heart failure
- Undertreatment of CHF
- Inconsistent dosing of CHF medications, including missed doses
A different sort of cough may be a side effect of angiotensin-converting enzyme (ACE) inhibitors commonly prescribed to people with CHF. ACE inhibitors cause a dry, hacking cough, unlike the wet, productive cough associated with pulmonary edema.
Stages of Heart Failure
Four stages (A-D) have been identified as heart failure progresses:
Stage A: There are no symptoms or identified problems with the heart, but there are risk factors for heart failure (e.g., genetics, high blood pressure, obesity).
Stage B: Also known as pre–heart failure, in which there are heart abnormalities (e.g., valve problems, heart wall thickening) that are not yet significant enough to cause symptoms.
Stage C: Also known as symptomatic heart failure, in which heart impairment causes symptoms, which include fatigue, shortness of breath, and cough.
Stage D: Also known as advanced heart failure or end-stage heart failure, is the most severe form, with significant symptoms that affect other organs as it progresses. Symptoms include:
- Fluid buildup and swelling (edema) in the legs, feet, and torso
- Shortness of breath/difficulty breathing
- Weakness and fatigue, especially with physical activities
- Irregular heartbeat/heart palpitations
- Nausea and loss of appetite
- Sudden weight gain or loss
- Coughing
Heart Failure and Lung Disease
Sometimes a cough is mistaken for a lung disease when it is a heart problem triggered by a lung disease. This is referred to as chronic pulmonary heart disease (PFD).
Pulmonary heart disease happens when the chamber of the heart that pumps blood to the lungs (called the right ventricle) has to work too hard and incurs damage over time. When the right ventricle fails (known as right-sided heart failure), it is called cor pulmonale.
Cor pulmonale is a serious medical condition that is always caused by lung disease. Symptoms can develop slowly or suddenly but typically include:
- Chronic productive cough
- Wheezing
- Shortness of breath
- General fatigue
- Extreme exhaustion with minimal exercise
- General fatigue
- Dizziness
- Swelling of the feet and ankles
Possible causes of cor pulmonale include:
- Chronic obstructive pulmonary disease (COPD): An obstructive, inflammatory lung disease
- Pulmonary hypertension: High blood pressure in the arteries of the lungs
- Autoimmune diseases: Including lupus and scleroderma directly damage the lungs
- Cystic fibrosis (CF): A progressive genetic disease that affects the lungs and other organs
- Bronchiectasis: The progressive, irreversible widening of the airways
- Interstitial lung disease (ILD): A large group of diseases that cause scarring of the lungs
- Obstructive sleep apnea (OSA): A chronic condition where breathing slows or stops during sleep
Heart Failure Healthcare Provider Discussion Guide
Get our printable guide for your next healthcare provider's appointment to help you ask the right questions.
:max_bytes(150000):strip_icc():format(webp)/DoctorDiscussionGuideOldMan-5c3e5dd446e0fb00017d6d47.png)
When to See a Healthcare Provider
If you have CHF, it is important to call your healthcare provider if:
- You develop a persistent cough for no known reason.
- You start coughing soon after a change in your treatment.
- Your coughing is accompanied by other symptoms such as chest pain, irregular heartbeats, swelling of the ankles and feet, or an overnight weight gain of 2 to 3 pounds (or 5 pounds in a week).
Be advised that over-the-counter decongestants containing pseudoephedrine and phenylephrine can raise your blood pressure and worsen the symptoms of heart failure. If you have CHF, these should only be used under the direction of a healthcare provider.
When to Call 911
If you have CHF, call 911 or seek emergency medical assistance if:
- You cannot breathe when lying down.
- You feel as if you are suffocating.
- You have chest pain, rapid heartbeat, or shortness of breath that does not go away with rest.
- You have fainted or lost consciousness.
Summary
A cardiac cough can develop if you have heart failure as fluids build up in the lungs. This may be due to worsening heart failure or because your drugs are not working as well as they should. It could also be that you're not taking your medications as prescribed or that you're experiencing side effects from ACE inhibitors.
Call your healthcare provider if you have heart failure and develop a persistent cough for no apparent reason. This is true if a chronic cough is your only symptom or if it occurs with other signs and symptoms of heart failure.