sábado, 9 de agosto de 2014

Pacemakers and Implantable Defibrillators: MedlinePlus

Pacemakers and Implantable Defibrillators: MedlinePlus

A service of the U.S. National Library of Medicine
From the National Institutes of HealthNational Institutes of Health




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.


Photograph of an x-ray of the chest showing a pacemaker

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08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators
08/06/2014 07:38 AM EDT
National Heart Lung and Blood Institute Logo
Source: National Heart, Lung, and Blood Institute
Related MedlinePlus Page: Pacemakers and Implantable Defibrillators


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