Endocardial Cushion Defect (ECD) ECD is an abnormal heart condition that makes the walls of the heart's chambers form abnormaly. Sometimes the walls are absent.

Complete heart block occurs when electrical impulses in the heart’s upper chambers (atria) don't travel down to the lower chambers (ventricles).

Congenital heart defects are the most common birth defects. WebMD explains the conditions that can affect the heart’s chambers, valves, and blood vessels.

Poor lifestyle choices in eight categories could increase your risk of atrial fibrillation, a common heart rhythm disorder ...

Third-degree heart block is the most serious of the three types of heart block. It's often triggered by a heart attack but can also have other causes.

Sure enough, the Aveir DR dual-chamber system, which allows two pacemakers to sync the top and bottom chambers of the heart, regulated Franxman’s heartbeat. “He's doing great.