A pacemaker is a device used to control an irregular heart rhythm. A pacemaker has flexible wires called leads. The wires are placed in one or more chambers of the heart.

Understanding the Context

They deliver electrical signals to fix the heart rate. Some newer pacemakers don't need wires. A pacemaker is a small, battery-operated device that helps the heart beat in a regular rhythm. Traditional pacemakers have three parts: a generator, wires (leads) and sensors (electrodes).

Key Insights

A pacemaker is a small device that helps regulate heart rate and rhythm by sending electrical impulses to the heart muscle. Learn how it works. What’s it like having a pacemaker? Getting a pacemaker might sound intimidating, but the process is simpler and more routine than you might expect. A pacemaker, also known as an artificial cardiac pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart.

Final Thoughts

A pacemaker is designed to prevent the heart from beating too slowly. For example, the heart may not be able to generate each electrical impulse, it may temporarily stop, or the nerve that carries the electricity from the top of the heart to the bottom chambers may wear out. Who Should Get a Pacemaker and What to Know About Living With One Once implanted, a pacemaker checks your heart's electrical activity. If your heart rate falls too low, the device sends a small electrical signal to the heart muscle, causing it to contract. A pacemaker allows your heart to maintain a satisfactory heart rate, which is needed for healthy blood flow. Most pacemakers have two parts: a pulse generator and leads.

What is a pacemaker? A pacemaker is composed of three parts: a pulse generator, one or more leads, and an electrode on each lead. A pacemaker signals the heart to beat when the heartbeat is too slow or irregular. Read on to learn more about pacemaker surgery, types of pacemakers and how a pacemaker can improve your heart health.