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 ...

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 ...

Understanding the physics of clot contraction could potentially lead to new ways to treat bleeding problems and clotting problems. Heart attacks and strokes -- the leading causes of death in human ...