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-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.

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 ...

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 ...

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 ...

The FBI is now heavily involved in the investigation into the disappearance of Nancy Guthrie, the mother of "Today" show host Savannah Guthrie. As the family makes another plea for her return, Jan Carabeo breaks down the latest timeline of known events connected to the missing Arizona woman.