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

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-surging struggle with her possible captors, a lead cardiologist speculated Thursday.

One part of the investigation into the disappearance of "Today" show host Savannah Guthrie's mother focuses on the missing woman's implanted medical device.

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 monitoring. The Biotronik Home Monitoring System essentially ...

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 cellular or Wi-Fi service. Medtronic’s MyCareLink Smart ...

December 8, 2011 (Rennes, France) — Remote monitoring of patients with dual-chamber pacemakers "was a safe substitute for conventional follow-ups, decreased the number of [clinic] visits, and enabled the early detection of important clinical and device ...