MIT engineers have developed a noninvasive pacemaker that stimulates the heart using ultrasound. The design could one day ...

Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...

The implantable pacemaker, a medical marvel that has extended millions of lives since its invention nearly 60 years ago, is getting a 21st century makeover. First came a wireless version; these ...

Pacemakers are medical devices implanted in the body to regulate heart rhythms. They're composed of electronic circuits with batteries and leads anchored to the heart muscle to stimulate it. However, ...

With heart failure, the heart becomes enlarged and its electrical systems become stretched. This interferes with how the parts of the heart coordinate to contract and pump blood, making it inefficient ...