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Doctor insights on: Can A Defibrillator Restart A Heart That Stopped

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Can a defibrillator restart a heart that stopped?

Can a defibrillator restart a heart that stopped?

Yes: Depending on why the heart stopped, debrillators can definitely restart a heart that has stopped. It is always worth a try. ...Read more

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Dr. Harinder Gill
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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


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How does a defibrillator restart a stopped heart?

How does a defibrillator restart a stopped heart?

By resetting it: A defibrillator restart a heart in an abnormal rhythm, the defibrillator sends an electrical shock to clear the abnormal rhythm, with the hope that the normal heart rhythm will restart. If there is no electrical activity- flat line, or asytole. There is no role for a defibrillator. ...Read more

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Could a person with a heart defibrillator implanted live shorter life?

Could a person with a heart defibrillator implanted live shorter life?

AICD: Most people with an AICD implanted have serious underlying heart disease and are at risk for living a shorter life than if they were normal. ...Read more

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Will an internal defibrillator keep on shocking the heart when the patient dies?

No: Most defibrillators will stop after 10-15 shocks. Also, death occurs from asystole so a defibrillator would eventually sense that and try to pace but not shock. ...Read more

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How external defibrillator work on the heart and what is the mechanism of action of the external defibrillator?

How external defibrillator work on the heart and what is the mechanism of action of the external defibrillator?

Ext defibrillators: There are 3 types. Manual defib- used by medical staff, automatic ones (aed's) found at airports, casinos, stadiums and wearable devices (lifevest)- worn while waiting for permanent one. All 3 devices monitor the heart and if the rhythm is ventricular tachycardia or fibrillation it delivers a painful but lifesaving electrical shock of up to 360 joules. The heart rhythm usually resets to normal. ...Read more

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Does the ICD defibrillator control the heart rate?

Does the ICD defibrillator control the heart rate?

Usually not: Usually the defibrillator just shocks the heart out of a dangerous rhythm. But if it is both a pacemaker and defibrillator, then it may control the heart rate. ...Read more

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Could an internal defibrillator increase the ejection fraction of the heart?

Could an internal defibrillator increase the ejection fraction of the heart?

ICD: An ICD which works only in the right ventricle doesn't do anything positive for EF. A biventricular pacing defibrillator's biV pacing component can cause small increases in EF when pacing as a BiV pacer in a patient whose native QRS duration is over 0.12 sec. ...Read more

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Do patients with cardiac defibrillators physically feel the shock? Or is it just like normal heart electricity where you feel nothing at all?

Do patients with cardiac defibrillators physically feel the shock? Or is it just like normal heart electricity where you feel nothing at all?

ICD: When an ICD discharges the patient feels the jolt. It is not a sensation most of the patients enjoy other than knowing it likely saved their life. ...Read more

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Why do paramedics use defibrillators with a heart attack patient?

Why do paramedics use defibrillators with a heart attack patient?

Fibrillation : Some patients who suffer a heart attack develop deadly heart rhythms called ventricular tachycardia or fibrillation. The heart does not contract properly under these conditions and without external defibrillation to shock the heart back into normal the patient would die. ...Read more

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What to do if I had a major heart attack and I am 44 years old I have to have a pace maker and a defibrillator put in?

What to do if I had a major heart attack and I am 44 years old I have to have a pace maker and a defibrillator put in?

MI, ICD: With your combination of problems, you should have received instruction about your status and diet, exercise, not smoking, lots of medications and how to maximize your chances of length and quality of life. Look at this site and read as much as possible: http://www.nlm.nih.gov/medlineplus/coronaryarterydisease.html ...Read more

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My friend claimed that the paramedics abused him with the defibrillator after being conscious from the fist shock. Will his heart be okay?

Defibrillation: Will the defibrillation cause long term damage to the heart? No. The more pressing question is: Why did he require defibrillation in the first place?….the answer to that is the key to his long term health. What kind of arrhythmia did he have and why? ...Read more

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How can a doctor implant an automatic defibrillator in a heart?

How can a doctor implant an automatic defibrillator in a heart?

ICD: for ICD and pacemakers the leads which actually contact the heart are put in through the veins. The actual battery and pulse/shock generator are put in subcutaneously by surgical incision. ...Read more

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If someone's heart stops from ventricular fibrillation, will a defibrillator restore heart rhythm or is it too late?

If someone's heart stops from ventricular fibrillation, will a defibrillator restore heart rhythm or is it too late?

ICD: Icds are implanted to monitor the electrical activity of very abnormal hearts to see if a life threatening rhythm occurs. If it detects one of these rhythms, it will charge its capacitor and fire a shock to defibrillate the heart back to stable rhythm. In appropriate patients these devices save lives. ...Read more

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If someone's heart stops due to damage from a virus attacking the heart, or like lupus can a defibrillator get the heart started again ?

If someone's heart stops due to damage from a virus attacking the heart, or like lupus can a defibrillator get the heart started again ?

Depends on "stop": There is a misunderstanding about when a defibrillator works. Defibrillators work when there is erratic electrical activity in the heart (ventricular arrhythmia). The shock delivered actually stops the heart, then intrinsic electrical activity in the heart restarts it. If the heart is stopped already, the shock doesn't help. Having said that, regardless of cause, they work in the right situation. ...Read more

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Internal defibrillator implanted for VT with no structural heart disease, (idiopathic). Only 20 years old. Is longevity affected by this?

Internal defibrillator implanted for VT with no structural heart disease, (idiopathic). Only 20 years old. Is longevity affected by this?

Ventricular Tachy: You need to discuss this with your cardiologist. Generally VT without structural or functional heart disease is low risk for shortening longevity. Without knowing more about you, it isn't possible to give you reassurance from out here. ...Read more

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Had a heart attack in july. had an echo after 3.5 months. EF was 35%. not improved.1 v-fib of 5 beats. says I need defibrillator. do I?

Had a heart attack in july. had an echo after 3.5 months. EF was 35%. not improved.1 v-fib of 5 beats. says I need defibrillator. do I?

Yes!: More than 3 months out from MI without improvement and V.Fib episodes are certainly indications for an AICD. Sounds like your Cardiologist knows what he/she is doing. I'd trust the Physicians judgement. If not then please get a Timely second opinion. Sudden Cardiac Death is no joke! Wish you well! ...Read more

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My gma (85yrs) was diagnosed with a-fib. Could she have a heart attack? Do we need to do cpr or use a defibrillator while waiting for an ambulance?

My gma (85yrs) was diagnosed with a-fib.  Could she have a heart attack?  Do we need to do cpr or use a defibrillator while waiting for an ambulance?

Abnormal heart beat: Your grandmother has an abnormal heart beat. It could increase her risk for stroke. She may be a candidate for blood thinner. You could learn CPR and signs for brain attack. Go to the american heart association website. AED may be beneficial but they are expensive. ...Read more

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What patients should get an implantable cardioverter-defibrillator (icd) for heart failure?

What patients should get an implantable cardioverter-defibrillator (icd) for heart failure?

New Guidelines: This is somewhat complex and will not all fit in 400 characters so I am creating initials. 1. Ischemic cardiomyopathy, i.C., with ejection fraction, ef, >30% but <35%, newyork heartassoc, nyha, class ii or iii, and >30 days post mi/revascularization. 2. Ic, ef <30%. 3. Ic, ef between 36-40% with inducible ventricular fibrillation or tachycardia, 4. Non-ic with ef <35% and nyha class ii or greater. ...Read more

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Is it safe and necessary to have stress test with 25-30% heart muscle? Should i have defibrillator implanted?

Is it safe and necessary to have stress test with 25-30% heart muscle? Should i have defibrillator implanted?

Not on the internet: These are very good, valid and serious questions. But, they cannot be validly answered by a stranger on the internet who has no access to your health history, examination or current labs. Anyone who would be willing to give you a guess should probably be avoided. If you have concerns about your care you can discuss this with your family doctor or a second heart specialist. ...Read more