Information about Nancy Guthrie's pacemaker helped authorities piece together a new timeline in her kidnapping. Can the devices track you?

Unconfirmed media reports say Nancy Guthrie's pacemaker stopped syncing with her Apple devices. Here's what that means.

Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...

A New Smyrna Beach nurse suffered from a heart rhythm disorder that caused her to faint, until she received a "life-saving" high-tech pacemaker. The Micra AV pacemaker is a leadless device smaller ...

Relatively weak magnets in consumer products have always posed some risk, usually very low, to the function of pacemakers and implantable cardioverter-defibrillators (ICDs). However, stronger, ...

For the tiniest infants born with heart defects, a pacemaker the size of a pill now provides hope to families who are dealing with the problem. NBC News' Yamiche ...