Heart Block

Working closely with your care team is important.

JoAnne M. Foody, MD, FACC, CardioSmart Editor-in-Chief
Learn more about Heart Block

The heart’s electrical system is pretty amazing. It’s our body’s built-in pacemaker—making sure the heart beats at a normal, even rate.

With each heartbeat, it sends signals to the heart muscle, telling it when to contract and pump blood to the brain and the rest of the body. When you have heart block, the signals between the heart’s chambers can be partially or totally blocked. As a result, the heart either does not beat regularly or your heart rate can drop to a dangerously low number of beats per minute. Heart block is different from blockages in the arteries of your heart (see coronary artery disease).

Some people are born with heart block (see congenital heart defects), while others develop it later in life. If you develop it as an adult, it’s usually due to damage to the heart muscle from certain diseases, surgery or medications. Symptoms can include fatigue, dizziness or shortness of breath. Your symptoms and treatment will depend on the type of heart block you have.

Use this condition center to learn more about living with heart block. You can also read about the latest research, create a list of questions to ask your doctor and much more.

Heart Block News & Events

Folic Acid Deficiency Rare in U.S.

Aug 19, 2014
Study finds folic acid deficiency is extremely rare, making routine tests unnecessary in the general population.

All-in-One Pill to Prevent Heart Disease?

Aug 08, 2014
A polypill to prevent heart disease has the potential to save millions of lives, according to experts.

Sitting Too Much Diminishes Fitness Level

Aug 08, 2014
No matter how much you may exercise, sitting for long periods of time reduces fitness, finds study.

Staying Active and Reducing Sedentary Time Key to Combating Obesity

Aug 08, 2014
Study finds that increasing physical activity and limiting sedentary time is the best combination for obesity prevention.

Reducing Risk of Heart Complications During Surgery

Aug 01, 2014
New guidelines help doctors and patients make the best possible decisions related to non-cardiac surgery.

Reducing Health Disparities in Hispanics and Latinos

Jul 31, 2014
Hispanics in the U.S. face dramatic health disparities, according to a recently-released statement.

Short Runs May Help Adults Live Longer, Healthier Lives

Jul 29, 2014
According to a recent study, running just 5-10 minutes a day could have significant health benefits.

Heat Stroke, Not Sudden Cardiac Death, is Top Threat for Marathon Runners

Jul 28, 2014
Long distance running involves a slightly increased risk of death, with heat stroke being the main cause, finds study.

Minding Your Portions

Jul 28, 2014
Committing to a heart-healthy diet can help reduce your risk of heart disease, stroke or repeat events. This includes watching what you put on your plate.

Pregnant and Breastfeeding Women Encouraged to Increase Seafood Consumption

Jun 24, 2014
The U.S. Food and Drug Administration and the Environmental Protection Agency recently updated guidelines regarding seafood consumption for pregnant and breastfeeding women.

E-cigarettes Can Help Smokers Quit

Jun 23, 2014
E-cigarettes are as effective as the patch in helping smokers quit, finds study.

Heart Events Worsen Outcomes for Patients with Chronic Kidney Disease

Jun 23, 2014

Study highlights importance of heart disease prevention for patients with chronic kidney disease.

Are Diet Drinks on Par with Water for Losing Weight?

Jun 13, 2014
According to a new study, diet beverages could help people lose more weight than drinking water alone.

Phone-Based Support Helps Heart Patients with Depression

Jun 12, 2014
Researchers develop simple, cost-effective treatment for heart patients diagnosed with depression or anxiety.

Spirit of the Heart in South Bronx, NY

Jun 07, 2014
Spirit of the Heart events offer heart disease screening and events in underserved communities.

Web-Based Program Helps Patients Improve Heart Health

Jun 05, 2014
Not only do Web-based programs help patients lower risk for heart disease, they’re more affordable than traditional counseling, according to study.

Worldwide Obesity Rates 'Startling'

May 30, 2014
Major study finds obesity rates have increased dramatically in all corners of the world over last three decades.

NIH Engages Women in Medical Research

May 29, 2014
The National Institutes of Health has unveiled new policies that will engage women in all phases of medical research.

Reducing Salt Intake, Nationwide

May 22, 2014
Experts identify ways to reduce salt consumption and improve heart health in the United States.

'Exercise Snacking': The Latest Health Trend?

May 14, 2014
Adding small bursts of exercise before meals could bring big health benefits, finds study.

Growing Use of ICDs to Prevent Sudden Cardiac Death

May 09, 2014
More patients may be eligible to receive implantable cardioverter-defibrillators, according to a scientific statement released by the American College of Cardiology Foundation and American Heart Association.

Finding Your Energy Balance

Apr 25, 2014
When it comes to our well-being, it's important to consider how much we put into our bodies and what we need in order to stay healthy.

Some Physical Activity is Better Than None

Apr 24, 2014
Adults engaging in any level of regular physical activity have lower risk of death compared to those who get no exercise, according to research.
CardioSmart News

Stumbling Block in Attempt to Reduce Risk of Complications from Surgery

Apr 15, 2014
Aspirin and blood-pressure lowering medication fail to improve outcomes in surgical patients at risk for heart disease.

Secondhand Smoke Causes Permanent Damage to Children's Arteries

Mar 13, 2014
Exposure to secondhand smoke during childhood ages arteries later in life, study finds.

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