Smaller than a grain of rice, new pacemaker is particularly suited to the small, fragile hearts of newborn babies with congenital heart defects. Tiny pacemaker is paired with a small, soft, flexible ...

Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed ...

The pacemaker is being reinvented. Originally, it was developed to remedy heart rhythm irregularities by use of electrical stimulation. The first pacemaker was implanted 66 years ago, in 1958. About ...