Atrial fibrillation is relatively common in patients with chronic aortic regurgitation and is associated with an elevated ...

The atrial septum separates the left and right atria, while the ventricular septum separates the left and right ventricles. The heart’s septum is critical for ensuring that blood flows properly ...

Patients with heart failure and atrial fibrillation (AF) at the time of mitral transcatheter edge-to-edge repair (M-TEER) for ...

The researchers next explored how transient ventricular and persistent atrial embryonic defects mechanistically led to adult atrial fibrillation. Previous work had shown that the hormone atrial ...

The heart's two upper chambers, called the atria, also contract to help fill the ventricles, but this milder contraction occurs just before the ventricles contract, and it is not felt in the pulse.

Because of the simultaneous depolarization of the atrium and ventricle, P waves are rarely seen on the surface ECG, ... In tachycardias with very rapid heart rates (e.g., atrial tachycardia, ...

The atria and ventricles work together, contracting and relaxing to pump blood out of the heart in a coordinated and rhythmic fashion. As blood leaves each chamber of the heart, it passes through ...

A private animal hospital in South Korea recently reported that its cardiac surgical team has successfully performed what it ...

Third degree heart block occurs when the electrical signal from the heart’s atria, or top chambers, cannot reach the ventricles, or bottom chambers. Without treatment, the heart may eventually stop.

The heart is a complex organ with a simple purpose – pump blood in and pump it out again. It does this through an interconnected network of rectangular heart cells called cardiomyocytes that pump ...