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What Is Heart Failure?

Heart failure is a condition in which the heart can't pump enough blood to meet the body's needs. In some cases, the heart can't fill with enough blood. In other cases, the heart can't pump blood to the rest of the body with enough force. Some people have both problems.

The term "heart failure" doesn't mean that your heart has stopped or is about to stop working. However, heart failure is a serious condition that requires medical care.

Overview

Heart failure develops over time as the heart's pumping action grows weaker. The condition can affect the right side of the heart only, or it can affect both sides of the heart. Most cases involve both sides of the heart.

Right-side heart failure occurs if the heart can't pump enough blood to the lungs to pick up oxygen. Left-side heart failure occurs if the heart can't pump enough oxygen-rich blood to the rest of the body.

Right-side heart failure may cause fluid to build up in the feet, ankles, legs, liver, abdomen, and the veins in the neck. Right-side and left-side heart failure also may cause shortness of breath and fatigue (tiredness).

The leading causes of heart failure are diseases that damage the heart. Examples include coronary heart disease (CHD), high blood pressure, and diabetes.

Outlook

Heart failure is a very common condition. About 5.8 million people in the United States have heart failure.

Both children and adults can have the condition, although the symptoms and treatments differ. This article focuses on heart failure in adults.

Currently, heart failure has no cure. However, treatments—such as medicines and lifestyle changes—can help people who have the condition live longer and more active lives. Researchers continue to study new ways to treat heart failure and its complications.

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Have questions about heart disease in women? Join The Heart Truth®, Million Hearts™, the American College of Cardiology, and Healthfinder.gov for a World Heart Day Twitter chat on September 28, at 1 p.m. eastern time. Learn more about the history of women’s heart disease research and ask live experts your questions. Go to www.twitter.com, and search for #HeartChat to join the chat.


Heart Failure Clinical Trials

Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. To find clinical trials that are currently underway for Heart Failure, visit www.clinicaltrials.gov.


Heart Failure in the News

August 29, 2012
NIH Media Availability: Protein linked to increased risk of heart failure and death in older adults
A protein known as galectin-3 can identify people at higher risk of heart failure, according to new research supported by the National Heart, Lung, and Blood Institute (NHLBI), part of the National Institutes of Health.

View all Heart Failure Press Releases

 
January 09, 2012 Last Updated Icon

The NHLBI updates Health Topics articles on a biennial cycle based on a thorough review of research findings and new literature. The articles also are updated as needed if important new research is published. The date on each Health Topics article reflects when the content was originally posted or last revised.

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