Dilated Cardiomyopathy

Your input helps shape an effective treatment plan.

JoAnne M. Foody, MD, FACC, CardioSmart Editor-in-Chief

Usually when we say someone has a “big heart,” it’s a good thing. However, if your actual heart muscle is enlarged, it means you can’t pump blood through your body as efficiently.  This is what happens if you have a condition called dilated cardiomyopathy. Your heart muscle stretches (dilates) and weakens. Cardiomyopathy mostly affects your left ventricle—the main pumping chamber of your heart.

Dilated cardiomyopathy can be caused by a number of factors. For example, you can develop it as a result of health conditions like coronary artery disease or high blood pressure, or it can result from health behaviors like alcohol abuse. It can affect any person at any age, including pregnant women, but is most common in adult men.

Dilated cardiomyopathy may not cause any symptoms at first. Over time, if your heart is not pumping as well as it should, you may feel very tired or you may find yourself short of breath after bouts of activity or after lying down.  Dilated cardiomyopathy can lead to problems such as irregular heart rhythms, stroke, heart attack, and heart failure.

An important part of your treatment will be taking good care of yourself. Use this condition center to learn more about dilated cardiomyopathy. You can keep up with the latest research, find questions to ask your doctor, and get tips to help you feel your best.

Dilated Cardiomyopathy News & Events

Innovative Anti-Smoking Campaign a Success

Sep 11, 2013
First federally funded anti-smoking campaign helps smokers quit with tips from former smokers.

Risk Factors for Rare Heart Condition in Delivering Mothers

Sep 11, 2013
Largest study of its kind identifies new risk factors for peripartum cardiomyopathy.

E-Cigarettes: Helping Smokers Quit?

Sep 10, 2013
Study finds e-cigarettes are more effective than patches in helping smokers kick the habit for good.

Coca-Cola Family Track Walk in Chicago

Sep 04, 2013
Members of the American College of Cardiology's CardioSmart team will be at Chicagoland Speedway on Sept. 15 to share tips on heart health and the benefits of an active lifestyle.

Medication Adherence Lowers Heart Disease Risk

Aug 12, 2013
Taking heart medications properly greatly reduces risk for complications and death, study finds.

Caloric Intake of Obese Children is Underestimated

Aug 12, 2013
Study uses model to show obese children consume significantly more calories each day than healthy children.

Study Highlights Need For More AEDs

Aug 09, 2013
Availability of life-saving devices must be widespread in public places.

Echocardiograms Unnecessary for the General Population

Jul 30, 2013
Study finds that a useful heart test has negligible benefit for healthy patients without a family history of heart disease.

Small Restaurants Have Calorie-Packed Items, Too

Jul 30, 2013
Meals from non-chain or small-chain restaurants typically have higher calorie content than their fast-food peers.

Sodium Levels Remain High in Popular Foods

Jul 30, 2013
Study finds little progress in reducing sodium levels of common processed and restaurant foods since 2005.

Noisy Airports May Impact Heart Health of Nearby Residents

Jul 23, 2013
Study shows noise from planes may disrupt sleep, worsening cardiovascular health.

Experts Recognize Obesity as a Disease

Jul 22, 2013
The American Medical Association joins health organizations in acknowledging obesity as a disease, deserving of proper treatment and prevention.

Obstructive Sleep Apnea Directly Linked to Risk for Sudden Cardiac Death

Jun 11, 2013
A common sleep disorder may significantly increase risk of sudden cardiac death.

Vegetarians May Live Longer Than Meat Eaters

Jun 05, 2013
New research confirms that vegetarian dietary patterns can extend longevity.

Mediterranean Diet Could Prevent Memory Loss

Jun 05, 2013
In addition to being heart-healthy, the Mediterranean diet may also help protect our minds.

Novel Ads Encourage Smokers to Ask Their Doctors About Quitting

Jun 05, 2013
A new national campaign aiming to curb smoking rates features real stories from former smokers.

Magnets in iPad 2 May Interfere with Heart Devices

May 28, 2013
A study conducted by a 14-year-old student finds that the iPad 2 interferes with implantable cardioverter defibrillators.

Poor Diet Negatively Impacts Sleep Patterns in Middle-School Children

May 23, 2013
Among children, a link found between diet and sleep may be the key to promoting better heart health as adults.

Smokeless Tobacco Trends in Adolescents

May 16, 2013
Smokeless tobacco use remains unchanged between 2000 and 2011 among middle and high school students.

Pets May Boost Heart Health

May 15, 2013
After a comprehensive review of existing research, experts acknowledge an association between pet ownership and reduced cardiovascular risk.

Understanding the Tobacco Control Act

May 02, 2013

A review of the law that helps protect the public against health problems caused by tobacco use.

Clinical Trials Shed Light on Minority Health

Clinical Trials Shed Light on Minority Health

Apr 26, 2013
Increasing minority participation in clinical trials can help ensure effectiveness and safety of drugs and devices for all Americans.

Binge Drinking Harms the Heart

Apr 23, 2013
A study highlights the negative impact that excessive drinking can have on the heart—even in young, healthy individuals.

Save Money with These Prescription Drug Secrets

Apr 16, 2013

Following these tips and shopping around could help you save $100 or more a month depending on the drug.

Witnessing CPR Helps Reassure Family Members, Provides Closure

Apr 15, 2013

Researchers find that family members who observed CPR on their loved ones are significantly less likely to have post-traumatic stress, anxiety and depression. 

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