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  1. Pacemaker - Mayo Clinic

    Jun 4, 2025 · 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. They deliver …

  2. Pacemakers and Defibrillators: What’s the Difference?

    1 day ago · Pacemakers and defibrillators both help manage irregular heart rhythms, but they aren’t the same. Find out how they work and who needs them.

  3. Pacemaker Guide: Implantation, Surgery, and Living With It

    Sep 23, 2024 · 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.

  4. Pacemaker - Wikipedia

    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.

  5. Pacemaker - American Heart Association

    Oct 29, 2024 · 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).

  6. Who Should Get a Pacemaker and What to Know About Living With One

    Feb 6, 2026 · 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 …

  7. When Is a Pacemaker Needed? Causes, Symptoms & Types

    A pacemaker is needed when your heart beats too slowly or pauses too long to supply your brain and body with enough blood. The two most common reasons are sick sinus syndrome, where your …

  8. Pacemakers: Surgery, Types and How They Work for Heart Health

    Jul 9, 2025 · Read on to learn more about pacemaker surgery, types of pacemakers and how a pacemaker can improve your heart health.

  9. Pacemaker Insertion - Johns Hopkins Medicine

    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 …

  10. Pacemaker: Types, Procedure, Precautions, and More - Healthline

    Nov 25, 2021 · What is a pacemaker? A pacemaker is an electric medical device that’s generally about the size of a matchbox. A surgeon implants it under your skin to help manage irregular heartbeats …