BACKGROUND: Premature atrial contractions (PACs) are independently associated with atrial fibrillation, stroke, and heart ...

Researchers at UT Southwestern Medical Center have identified a previously unrecognized small protein in cells of the human heart that plays a key role in heart muscle contraction. The protein is made ...

Northwestern Medicine scientists have developed a new way to measure heart contraction and electrical activity in engineered human heart tissues, according to findings published in Science Advances.

The heart is the only muscle that contracts and relaxes continuously over a lifetime to pump oxygen-rich blood to the body's organs. Researchers at UT Southwestern Medical Center now have identified a ...

Premature ventricular contraction (PVC) is a type of abnormal heartbeat, or arrhythmia. It happens when the heartbeat begins in the lower, rather than the upper, heart chambers. This creates an ...