To find out how well your heart is working, your doctor may ask you to have an electrocardiogram (ECG). Learn more about it and why you may need an ECG.
Long QT syndrome
Long QT syndrome (LQTS) is a disorder of the heart's electrical system that can cause fast, chaotic heartbeats, called arrhythmias.
Aortic valve replacement
The aortic valves in the heart keep blood flowing in the correct direction. Learn how to prepare for an aortic valve replacement and what to expect.
This condition can disrupt the rhythm of your heart. It can cause palpitations, fainting or, in serious cases, cardiac arrest.
An angiogram is a test used to help detect abnormal blood vessels, clots and other problems. Learn more about angiograms including what to expect.
Pericarditis is a serious condition caused by inflammation of the thin sheath around the heart. Read more about pericardititis symptoms, treatment and causes.
Costochondritis is an inflammation in the cartilage that joins your ribs to your breastbone. If you have costochondritis, learn how you can reduce the pain.
Heart murmurs are extra sounds made by the heart. Some heart murmurs are serious, some are not — here's what you need to know.
Cardiac enzyme tests can check whether the heart muscle is damaged, and indicate if a person has had a heart attack.
Children with Noonan syndrome may have odd facial features, restricted growth and heart defects, but most, with therapy, go on to lead normal lives.