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Doctor insights on: How Does A Defibrillator Restart A Stopped Heart

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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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Dr. Debra Rosenblatt
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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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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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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?

Depends : It can depending on how it was programmed. An ICD uses wire(s) that are also able to pace the chamber they occupy. ...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