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Doctor insights on: How Do Pacemakers And Defibrillators Work

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How do pacemakers and defibrillators work?

How do pacemakers and defibrillators work?

Heart Rhythm: Pacemakers control the rate of the heart's beat. Defibrillators deliver shock(s) to try to return the heart to a normal rhythm. ...Read more

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Dr. Brad Goldenberg
2 doctors shared insights

Pacemaker (Definition)

A pacemaker is a device which sends electrical signals to the heart triggering heartbeats when needed. There are many ways to implant and configure a pacemaker; it may beat the top chambers (atria), lower chambers (ventricles) or both. Some systems stimulate both the left and right ventricles together. Pacemakers generally treat abnormally slow heart rhythms and certain ...Read more


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Is pacemaker the same function as defibrillator?

Is pacemaker the same function as defibrillator?

No.: Both defibrillators (icds) and pacemakers can treat slow heart rhythms. Some pacemakers can perform anti-tachycardic pacing, which can terminate some upper-chamber tachycardias. For the most part, however, tachycardias can not be treated by a pacemaker - and implantable cardioverter-defibrillator is required. ...Read more

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What is the difference between a defibrillator and a pacemaker?

What is the difference between a defibrillator and a pacemaker?

What they do: Some pacemakers include defibrillators and some do not. A "regular" pacemaker simply sets the heart rate or helps to control the rate at which the heart beats. An implated defibrillator, usually is also a pacemaker, but constantly monitors the heart for dangerous heart rate types and delivers an eclectric shock to try and return the irregular heart rate to normal. ...Read more

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What can interfere with pacemakers and implantable defibrillators?

Pacemakers: Strong magnetic fields such as those used in security metal detectors and magnetic fields produced by large electric motors can interfere with pacemaker and defibrillator function. They may not necessarily turn a device "off" but can interfere with its programming. With only rare exceptions, patients with these devices need to avoid MRI scanners. Patients with these devices can have ct scans. ...Read more

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What can interfere with pacemakers and implantable defibrillators?

What  can interfere with pacemakers and implantable defibrillators?

Pacemakers: Strong magnetic fields such as those used in security metal detectors and magnetic fields produced by large electric motors can interfere with pacemaker and defibrillator function. They may not necessarily turn a device "off" but can interfere with its programming. With only rare exceptions, patients with these devices need to avoid MRI scanners. Patients with these devices can have ct scans. ...Read more

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What things interfere with pacemakers and implantable defibrillators?

What things interfere with pacemakers and implantable defibrillators?

Not much: Common household appliances and cellular phones are generally safe to use near an implantable defibrillator. It is best to avoid sources of significant electric current. For example, you should keep your icd 2 feet from an arc welder. You should not lean over your car engine while it is running. It is best to also keep large magnets off your device as well since this can affect its performance. ...Read more

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When i get my pacemaker/defibrillator changed. Am i supposed to be awake? The nurse said i won't feel anything but will be able to answer questions.

Sleepy: You'll be given medications that will make you drowsy and take away nervousness (such as versed and fentanyl) but you will be awake enough to answer questions. The pacemaker site will be numbed with local anesthetic so all you might feel after the numbing is a bit of tugging but it shouldn't hurt. If it does you'll be awake enough to tell the nurses who will give you more medications. ...Read more

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I know someone that has a pacemaker / defibrillator, and i was wondering if they got shocked would it stop it from working? What will happen if they do get shocked?

I know someone that has a pacemaker / defibrillator, and i was wondering if they got shocked would it stop it from working? What will happen if they do get shocked?

The : The device will continue to work unless there have been so many shocks which may drain the battery. The battery level can be detected by a simple noninvasive test. ...Read more

Dr. Krishna Kumar
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Defibrillator (Definition)

Defibrillation is a common treatment for life-threatening cardiac dysrhythmias, ventricular fibrillation, and pulseless ventricular tachycardia. Defibrillation consists of delivering a therapeutic dose of electrical energy to the affected heart with a ...Read more