If you have a pacemaker installed to regulate your heart’s rhythm, you may wonder when you can return to your regular workout routines. Anything that stretches or puts direct pressure on the chest and ...

The heart may be small, but its rhythm powers life. When something throws that rhythm off—especially after surgery—it can become a race against time to restore balance. For decades, doctors have ...

The tiny pacemaker sits next to a single grain of rice on a fingertip. The device is so small that it can be non-invasively injected into the body via a syringe. Northwestern University engineers have ...