Heart valves allow blood to flow one way and prevent it from flowing in the wrong direction. The tricuspid valve controls blood flow between the right atrium and right ventricle. The bicuspid or ...

Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

The right coronary artery and the atrioventricular node are adjacent to the annulus and are important anatomical considerations for surgical or transcatheter interventions. The right coronary artery ...

During embryonic development, the right ventricle is formed from the secondary heart field into a crescent-shaped, thin-walled structure. 6 It is the most anterior heart chamber, sitting just beneath ...

Atrial fibrillation is caused by an abnormality in the heart’s electrical conduction system. It’s common — around 9 percent of people 65 and over have it. To understand A fib, as it’s often called, it ...

If you have atrial fibrillation-- an irregular and sometimes fast heart rate-- you could also get blood clots in the top part of your heart. Clots can stop the blood flow to your brain and possibly ...

Hypoplastic left heart syndrome (HLHS) is a rare congenital heart defect in which the left side of the heart does not fully develop. This restricts the pumping of oxygenated blood around the body. One ...

Structural or functional abnormalities within the heart's left atrium, with or without symptoms, may increase a person's risk of developing dementia later in life by 35%, according to new research ...