When (60hz AC) current greater than the 16 mA “let go current” passes through the forearm, it stimulates involuntary contraction of both flexor and extensor muscles. When the stronger flexors dominate, victims may be unable to release the energized object they have grasped as long as the current flows. If current exceeding 20 mA continues to pass through the chest for an extended time, death could occur from respiratory paralysis. Currents of 100 mA or more, up to 2 Amps, may cause ventricular fibrillation, probably the most common cause of death from electric shock.
Ventricular fibrillation is the uneven pumping of the heart due to the uncoordinated, asynchronous contraction of the ven-tricular muscle fibers of the heart that leads quickly to death from lack of oxygen to the brain. Ven-tricular fibrillation is terminated by the use of a defibrillator, which provides a pulse shock to the chest to restore the heart rhythm. Cardiopulmonary resuscitation (CPR) is used as a temporary care measure to provide the circulation of some oxygenated blood to the brain until a defibrillator can be used.
Video store owner electrocuted when he contacted an energized circuit while repairing an air conditioning thermostat.
"Rhianna Anderson said Trinity stopped breathing and had to be shocked to bring her heart back to its normal rhythm."
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