A pacemaker is a small, battery-powered device that controls the heartbeat. Our heartbeats are controlled by a highly efficient, biological electrical system that ensures our heart steadily pumps ...

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 ...

Dr. Myerburg answers the question: 'How Do Pacemakers Know To Pace Faster?' — -- Question: How do pacemakers know when I need a faster heart rate, for example when I am exercising or anxious?

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Dear Dr. Donohue o My wife is 85 and is scheduled to have a pacemaker put in. I wasn't aware that she had heart trouble. Is a ...

Dr. Brian Olshansky answers the question: 'Sex After Pacemaker Implantation?' — -- Question: Can I still be active sexually if I get a pacemaker? Do I need to take any precautions? Answer :Well, ...

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.