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 ...

An independently validated risk score may help predict adverse events in patients with frequent premature ventricular contractions (PVCs), new research suggests. Over the past decade, there has been ...

An arrhythmia is an irregular heartbeat that may feel like a racing or fluttering heart. It is not always serious but can sometimes indicate a potentially fatal heart problem. Arrhythmias — sometimes ...