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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. 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.

  3. 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).

  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. 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 …

  6. 7 Signs You Need a Pacemaker - Cleveland Clinic Health Essentials

    Jul 11, 2025 · 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.

  7. 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 …

  8. How Does a Pacemaker Work? - Verywell Health

    Oct 16, 2025 · Learn what pacemakers are and how they work, as well as the signs that your pacemaker needs to be replaced.

  9. What Are Pacemakers? - NHLBI, NIH

    Mar 24, 2022 · A pacemaker is a small d evice used to treat some arrhythmias. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. Pacemakers send electrical pulses …

  10. Pacemakers and Implantable Defibrillators | MedlinePlus

    Aug 12, 2025 · If your arrhythmia is serious, you may need a cardiac pacemaker or an implantable cardioverter defibrillator (ICD). They are devices that are implanted in your chest or abdomen. A …