More than 20 years ago, Terri Mattula’s dog Gator passed out while her husband was walking him. They took Gator to the vet and learned he had a third-degree heart block and needed a pacemaker. However ...

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 ...

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, ...

Around 3 million Americans live with a pacemaker - a small electronic device that helps regulate their heart rate. As ...