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 ...

Millions of people worldwide live with a pacemaker that regulates their heartbeat, but exactly what are these devices and how do they work? Pacemakers can save the lives of heart patients by ...

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 ...

Dr. Friedman answers the question: 'Types Of Pacemakers, Best Candidates?' — -- Question: What are the different kinds of pacemakers and is there a special kind for each person? Answer :A ...

Dear Dr. Roach: My husband had a stress test done several years ago, and at the time, it was discovered that he had a bundle branch block in his heart. No one mentioned it until recently, after he had ...