For the first time, the fully mechanical heart made by BiVACOR, which uses the same technology as high-speed rail lines, has been implanted inside a human being. The feat marks a major step in ...

Atrial fibrillation (AFib) is a form of arrhythmia, or abnormal heart rhythm. Coronary artery disease (CAD) is a condition where blockages in major blood vessels reduce the flow of blood ...

The Valsalva maneuver is one of several simple physical actions called vagal maneuvers that act on the vagus nerve to slow your heart rate. Doctors may suggest vagal maneuvers to try and slow your ...