Nancy Guthrie's pacemaker stopped syncing with her Apple Watch on February 1.

A 76-year-old woman with known ischemic cardiomyopathy, a left ventricular ejection fraction of 25%, and a previously inserted pacemaker presents to her cardiologist concerned that there is a problem ...

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 ...

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

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