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.

Dr. Hunter Champion answers the question: 'What Is A Biventricular Pacemaker?' — -- Question: What is a biventricular pacemaker or cardiac resynchronization therapy (also called a CRT device), ...

Pediatric cardiologists have implanted a dual chamber leadless pacemaker in a child. UC Davis Director of Pediatric Electrophysiology Dan Cortez has set another world record: He is the first to ...

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 ...

Two types of implantable cardioverter defibrillators can reduce the risk of sudden cardiac death with HCM. Pacemakers and implantable loop recorders also may be options.

A pacemaker is a small, battery-powered device that controls the heartbeat. Our heartbeats are controlled by a highly efficient, biological electrical system that ensures our heart steadily pumps ...

A 59-year-old woman with Parkinson's disease has been discharged from a hospital in Nanning, Guangxi Zhuang autonomous region ...

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

The patients who made the biggest news at last week’s meeting of the American Heart Association in Miami were those who can talk about their “tickers” without being cute. They are the growing number, ...