For something that is a little smaller than an i Pod, the implantable cardioverter defibrillator carries quite a punch.
The implant has small wires running to the chambers of the heart. If there is any disruption like ventricular fibrillation the implant sends off a burst of electricity to force the heart into a normal rhythm.
Before the (ICD) an attack of ventricular fibrillation was often deadly.
The implant works on the same premise as the heart paddles that are used in most emergency rooms or trauma centers, to shock a patient back to life.
The invention of the (ICD) has given people with heart …read more

Atrial fibrillation is caused when your heart’s electrical system is not functioning properly.
This problem is not as serious as ventricular fibrillation, this occurs when your heart stops beating. When ventricular fibrillation occurs the heart has to be shocked back to life, as you have seen on TV.
Atrial fibrillation is the most common heart arrhythmia, when there is a problem with the speed in which your heart beats; it is classified as a type of arrhythmia.
AF occurs when rapid, disorganized electrical signals in the heart’s two upper chambers, called the atria (AY-tree-uh), cause them to contract very fast and irregularly (this …read more