Although premature ventricular beats (PVBs) in young people and athletes are usually benign, they may rarely mark underlying heart disease and risk of sudden cardiac death during sport. This review ...

With children increasingly glued to their cell phones, state legislators are hoping to reduce potential harm with restrictions for those under 18. Lawmakers are pushing a detailed bill that would ...

Ejection fraction (EF) measures the amount of blood pumped out of your heart's lower chambers, or ventricles. It's the percentage of blood that leaves your ventricle when your heart contracts. The ...

What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node. It uses ...

Axcelis Technologies, Inc. engages in the manufacture of capital equipment for the semiconductor chip manufacturing industry. Its ion implantation systems product line includes high and medium current ...