4 doctors weighed in:
How does a defibrillator function?
4 doctors weighed in

Dr. Jason Rubenstein
Internal Medicine - Cardiology
1 doctor agrees
In brief: Electrical system
A defibrillator causes all myocardial (heart) cells to become depolarized at the same time.
This extinguishes the abnormal arrhythmia, and allows the natural cardiac pacemaker to kick back in. This requires a large electrical current, to make sure all myocardial cells get activated at the same time.

In brief: Electrical system
A defibrillator causes all myocardial (heart) cells to become depolarized at the same time.
This extinguishes the abnormal arrhythmia, and allows the natural cardiac pacemaker to kick back in. This requires a large electrical current, to make sure all myocardial cells get activated at the same time.
Dr. Jason Rubenstein
Dr. Jason Rubenstein
Thank
Dr. Howard Rubin
Internal Medicine - Cardiology
1 doctor agrees
In brief: Defibirllator
The defibibrillator is a mini computer with a sensing circuit and a shock circuit.
If the device senses a life threatening arrhythmia for a certain time period, then the device charges and will shock the patient out of the life threatening arrhythmia. The defibrillator is programmed by the electrophysiologist based on the studies done prior to implant and then after implant it is tested.

In brief: Defibirllator
The defibibrillator is a mini computer with a sensing circuit and a shock circuit.
If the device senses a life threatening arrhythmia for a certain time period, then the device charges and will shock the patient out of the life threatening arrhythmia. The defibrillator is programmed by the electrophysiologist based on the studies done prior to implant and then after implant it is tested.
Dr. Howard Rubin
Dr. Howard Rubin
Thank
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