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Pacemakers and Implantable Defibrillators

Summary

An arrhythmia is any disorder of your heart rate or rhythm. It means that your heart beats too quickly, too slowly, or with an irregular pattern. Most arrhythmias result from problems in the electrical system of the heart. 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 pacemaker helps control abnormal heart rhythms. It uses electrical pulses to prompt the heart to beat at a normal rate. It can speed up a slow heart rhythm, control a fast heart rhythm, and coordinate the chambers of the heart.

An ICD monitors heart rhythms. If it senses dangerous rhythms, it delivers shocks. This treatment is called defibrillation. An ICD can help control life-threatening arrhythmias, especially those that can cause sudden cardiac arrest (SCA). Most new ICDs can act as both a pacemaker and a defibrillator. Many ICDs also record the heart's electrical patterns when there is an abnormal heartbeat. This can help the doctor plan future treatment.

Getting a pacemaker or ICD requires minor surgery. You usually need to stay in the hospital for a day or two, so your doctor can make sure that the device is working well. You will probably be back to your normal activities within a few days.

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  • (American Academy of Family Physicians) Also in
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  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • Easy-to-Read (American Heart Association) - PDF

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  • (American Heart Association)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • (American Heart Association)

Related Issues

  • (American Heart Association)
  • (American Heart Association)
  • (American Heart Association)
  • (American Heart Association)
  • (American Heart Association)
  • (American Heart Association)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)

Specifics

  • (American Heart Association)
  • (American Heart Association)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)
  • From the National Institutes of Health (National Heart, Lung, and Blood Institute)

Genetics

  • From the National Institutes of Health (National Library of Medicine)
  • From the National Institutes of Health (National Library of Medicine)

Videos and Tutorials

  • Video (BroadcastMed) - Halifax Health Medical Center, Daytona Beach, FL, 2/19/2009
  • Video (BroadcastMed) - Providence Saint Joseph Medical Center, Burbank, CA, 10/30/13

Statistics and Research

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Clinical Trials

  • From the National Institutes of Health (National Institutes of Health)
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Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)

Find an Expert

  • (Heart Rhythm Society)
  • From the National Institutes of Health

Children

  • (American Heart Association)

Patient Handouts

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