In a breakthrough development, scientists from Northwestern University, have unveiled the world's smallest pacemaker, tinier than one could ever imagine- even smaller than the size of a rice grain.

Add Yahoo as a preferred source to see more of our stories on Google. As people follow Nancy Guthrie's disappearance, people are wondering how investigators are using her pacemaker to find her. Hawaii ...

Dear Doctor: My mom is 93, and her doctor says she needs a pacemaker to control a heart arrhythmia. How does a pacemaker work? Is the operation dangerous for someone her age? Dear Reader: A pacemaker ...

Scientists from Northwestern University have created the world’s tiniest pacemaker—smaller than a grain of rice—to help babies born with congenital heart defects live. This ultra-miniature device can ...

CHICAGO — One person’s used pacemaker is another person’s treasure. A program to refurbish used pacemakers could expand access to the lifesaving devices. In a clinical trial of nearly 300 people, ...

Q: My mom is 93, and her doctor says she needs a pacemaker to control a heart arrhythmia. How does a pacemaker work? Is the operation dangerous for someone her age?