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Doctor insights on: Biventricular Pacemaker Defibrillator

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What is a biventricular pacemaker?

What is a biventricular pacemaker?

CRT: Also known as cardiac resynchronization therapy pacemaker, this device has 2 or 3 leads positioned to make the left ventricle contract at the same time - or in synchrony - as the right ventricle so that the heart beats in a more balanced way. ...Read more

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Dr. Scott Keith
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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I an very deconditioned. I have a biventricular pacemaker. Would it be better to walk at a slow pace for a longtime or short time fast paced?

I an very deconditioned. I have a biventricular pacemaker. Would it be better to walk at a slow pace for a longtime or short time fast paced?

Slow: Conditioning should start at a slow pace for a period that will not cause exhaustion or fatigue. This may take a while before increasing the time duration. In patients with significant cardiac impairment duration of exercise rather than intensity is better in improving functional status ...Read more

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I'm on the biventricular pacemaker I was told its put under collar bone, Where are the other ones put?

I'm on the biventricular pacemaker I was told its put under collar bone, Where are the other ones put?

Pacemakers: Pacemakers are preferably placed on the chest wall just below the clavicle (collar bone). They are all placed in about the same place regardless of single, dual or more chamber pacing. ...Read more

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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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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 do you suggest if my pacemaker/defibrillator is vibrating 4 days after being in the hospital for a new battery?

What do you suggest if my pacemaker/defibrillator is vibrating 4 days after being in the hospital for a new battery?

Probably normal: Check with the rep or your doc but many of the new ones do this as a check. It's probably normal. ...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?

Many differences: A pacemaker is used in the case of slow heart beats or blocked electrical conduction between upper and lower chambers (av block). A defibrillator will 'shock' (defibrillate) the heart in the case if abnormal life threatening fast heart beats (ventricular fibrillation or ventricular tachycardia). All defibrillators have a back-up pacemaker in them, but pacemakers cannot defibrillate the heart. ...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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Could you tell me is it safe if my husband has a pacemaker defibrillator can he get close to invisible fencing?

Could you tell me is it safe if my husband has a pacemaker defibrillator can he get close to invisible fencing?

Invisible fencing: I have seen no literature on this type of device interfering with pacer/icd function. I doubt it would be a problem but it shouldn't be a problem staying away from the proximity to such devices to be safe. ...Read more

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Pacemaker and defibrillator is causing phrenic nerve stimulation. What can be done?

Pacemaker and defibrillator is causing phrenic nerve stimulation. What can be done?

Needs attention: The output can be lowered but if that doesn't provide sufficient safety margin, the leads will need to be revised. ...Read more

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Why would the implantable cardioverter-defibrillator not start a pacemaker when the pacemaker shut off?

???: I think there may be some confusion. An implanted cardio-verter defibrillator delivers a shock when certain rhythms are detected per the parameters or threshholds set by the cardiologist. The pacemaker paces the heart - the pacemaker would only 'shut off' if it was end of life, i.e. Expired battery. The icd is a pacemaker and a defibrillator and they serve two functions, both tied to heart rhythm. ...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 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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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.

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

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Does a pacemaker/defibrillator cure dilated cardiomyopathy?

Does a pacemaker/defibrillator cure dilated cardiomyopathy?

Not usually.: An icd (defibrillator) may rescue you from cardiac arrest, which is a risk one carries with cardiomyopathy - but it doesn't cure cardiomyopathy. A bi-ventricular pacemaker (or biv-icd) may reverse some of the cardiomyopathy, but not always. ...Read more

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How does bystander lightning (not a direct strike) affect implanted pacemakers, defibrillators, vagus nerve stimulators, etc...?

How does bystander lightning (not a direct strike) affect implanted pacemakers, defibrillators, vagus nerve stimulators, etc...?

Usually no effect.: The lightning strike (even as a bystander - it travels through the soil & can pop up at distances far from the original strike) can have deleterious effects on your heart (causing arrhythmia) or brain (causing unconsciousness) but these are just as likely with or without an implanted device. All electronic implants have a floating ground, which means they cannot short out because of an external ch ...Read more

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Dr. Herman Hammerstead
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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