Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
Angina pectoris - or simply angina - is chest pain or discomfort that keeps coming back. It happens when some part of your heart does not get enough blood and oxygen.
An anomalous coronary artery (ACA) is a heart defect. This is something your baby is born with (congenital). In ACA, the blood vessels that supply blood to your child’s heart muscle aren’t normal.
Aortic stenosis means that your child has a heart valve that is too narrow or is blocked. The aortic valve is 1 of 4 heart valves that keep blood flowing through the heart. The valves make sure blood flows in only one direction. The ...
Aortic valve regurgitation is when a person's aortic valve leaks. The aortic valve is one of the heart's 4 valves. These valves help the blood flow through the heart and out to the body. Normally, the aortic valve stops blood from ...
An arrhythmia is an abnormal heart rhythm that can cause problems with the contractions of your heart chambers.
Arrhythmogenic right ventricular dysplasia (or ARVD) is a disease of the heart muscle. In this disease, fatty fibrous tissue replaces normal heart muscle. This interrupts normal electrical signals in the heart and may cause irregular and...
Atherosclerosis is when arteries get hardened and narrowed. Learn what causes it, how it harms your health, and what you can do to prevent it.
Atherosclerosis is a type of thickening or hardening of the arteries caused by a buildup of plaque in the inner lining of an artery. It can increase your risk of heart attack, stroke, and other circulatory conditions.
Atrial fibrillation is when the upper chambers of the heart don’t pump normally. Learn what happens in the heart, and how it can be managed.
Atrial flutter is when the upper chambers of the heart beat too fast. Learn how it happens, and how it can be treated.
Atrial flutter is an abnormal heart rhythm that causes the atria to beat more quickly than they should.