The special pacemaker inserted into Vice President Dick Cheney last weekend is a proven technology that has been around for more than a decade, Houston cardiologists said Monday. The small, ...

If you've seen "ER" or pretty much any other medical show on TV, you've seen dramatic scenes of a defibrillator in action. The paddles placed on the patient's chest. The shout of "Clear!" The ...

Thousands of Americans with heart trouble have small implanted defibrillators, to help regulate their heartbeat and keep cardiac events at bay. But new research finds that on extremely hot days, ...