During an average lifetime, the heart beats more than 2 billion times. To you, it might just be a steady “lub-dub” that speeds up under pressure and slows as you drift to sleep. But behind that rhythm ...

A new, tiny pacemaker — smaller than a grain of rice — developed at Northwestern University could play a sizable role in the future of medicine, according to the engineers who developed it.

Dr. Anthony J. Federico, a pioneering specialist in pacemaker surgery, died May 17, surrounded by his family, from complications of Alzheimer's Disease in Peregrine's Landing at the Shoreline in ...