Authorities are investigating the disappearance of Nancy Guthrie, 84, who was last seen at her Arizona home on Sat. Jan. 31 ...

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

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

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 ...

The heart devices do not track location, nor do they transmit across large distances. Like an estimated three million Americans, Nancy Guthrie, the 84-year-old mother of the NBC News anchor Savannah ...

Taliyah Symonette's rare heart defect went untreated for years before doctors at Corewell Health performed emergency surgery.

Nancy Guthrie was reported missing on Sunday and investigators believe time is of the essence as the 84-year-old would be in ...

Princess Paris has been living with heart disease for 17 years, enduring three heart attacks and relying on oxygen, stents, ...

"Today" show host Savannah Guthrie's mom was still missing, though there have been some updates in the case. Here's the ...

"I firmly believe that being totally unaware of my condition, I could have gone into cardiac arrest." ...

The FBI continues to offer a reward of up to $50,000 for information leading to Nancy Guthrie's recovery.