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

As the search for Savannah Guthrie's mother, Nancy, continues, a cardiologist explains how pacemakers work and if they can be used to track a missing person's location.

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

By Gina Kolata Like an estimated three million Americans, Nancy Guthrie, the 84-year-old mother of the NBC News anchor Savannah Guthrie, has a pacemaker implanted in her chest. Law enforcement ...

Dr. Srihari S. Naidu speaks with Parade to answer all our questions about pacemakers.

Nancy Guthrie’s 2 a.m. pacemaker spike on the day she vanished could mean that the elderly woman was involved in a heart rate ...

A pacemaker from Medtronic, newly approved by the Food and Drug Administration, allows patients to securely transmit data from the pacemaker to their physicians via a smartphone or tablet using ...

WASHINGTON -- The government has approved a pacemaker outfitted with a tiny transmitter that can tell your doctor how your heart is doing -- the first medical implant capable of such real-time ...

More than three decades have transpired since the inception of transtelephonic pacemaker monitoring. 1 3 This modality was identified as a useful method for tracking the function of pacemaker systems, ...