Tachycardia

Tachycardia Tachycardia means a fast heart rate. The normal adult heart rate, or pulse, ranges from 60 to 100 beats per minute. A heart rate that continues to beat above 100 beats per minute is called tachycardia.

Implanted defibrillators prevent sudden death For people with an inherited heart condition that puts them at high risk of sudden death, an electronic implant that delivers a shock when the heart goes into a dangerous rhythm can be a lifesaver...

Special pacemakers, but not drugs, reduce cardiac arrests Implantable defibrillators -- devices that shock the heart back into rhythm when it beats irregularly -- reduce the chances of dying from sudden cardiac arrest, but drugs designed to prevent irregular beats do not...