Arrhythmia occurs in the ventricles and hinders the heart from effectively pumping blood. The condition can make one to pass out within a few seconds and die within minutes if not treated. Prevention of death requires immediate treatment using an electric shock/pulse to the heart. An ICD wire is equipped with wires that have electrodes on either ends connecting to the heart’s chambers.
The ICD is used to monitor the heart rhythm and whenever it detects an irregularity in ventricle rhythms, it initiates low energy electric pulses in order to restore normal heartbeat rhythms. When the low energy pulses fail to restore regular heartbeat, the ICD switches to high energy pulses in defibrillation. The device also switches to high energy pulses in instances where the ventricle begins to quiver instead of strongly contracting. Although they only last a fraction of a second, the high energy pulses are painful.