The right atrium has a function in both the flow of blood through the heart, as well as in the heart's electrical system. In ...

Atrial flutter is an arrhythmia that results from an abnormal electrical circuit inside one of your heart’s two upper chambers, or atria. Most often, this faulty signal develops in the right atrium.

This opening allows oxygen-rich blood from the left atrium to mix with oxygen-poor blood in the right atrium, forcing the heart to work harder than normal. During fetal development, several ...

RA denotes right atrium, RAA right atrial appendage, and RV right ventricle. This population includes the patients who had atrial and ventricular leadless pacemakers implanted (with or without ...

The tricuspid valve controls blood flow between the right atrium and right ventricle. The bicuspid or mitral valve does the same on the left. The heart consists of four chambers .

Chen, H. and Xu, W. (2025) Ultrasound Revealed Right Atrial Tumor Thrombus in a Patient with Superior Vena Cava Syndrome: A Case Report. Yangtze Medicine, 9, 125-130. doi: 10.4236/ym.2025.92010 .

Interatrial septal aneurysm, also known as atrial septal aneurysm (ASA), means there is a bulge in the wall of tissue that separates the left and right atria of the heart. Learn more.

The right atrium and right ventricle work together to receive the blood that has just traveled throughout the body and move it into the lungs. There, it gets topped off with oxygen.

The tricuspid annulus has very little fibrous tissue or collagen. Adipose tissue fills the interventricular space between the right atrium and ventricle on the anterosuperior and inferior sides ...

Ischemic heart disease and heart failure are associated with previously unknown changes in the right atrium of the heart, a new study shows. The groundbreaking study reveals how various forms of heart ...