First, the system should contain three (3) electrodes. The head should be fitted with a tightly fitting cap containing an electrode with a saline solution moistened sponge. It is through this electrode that the current is introduced. Second, each ankle should be tightly fitted with an electrode, causing the current to divide and guaranteeing passage through the complete trunk of the subjects body. Use of one (1) ankle electrode (instead of two [2]) will almost always ensure a longer and more difficult electrocution. These two (2) ankle electrodes are the return path of the current. Contact should be enhanced by using saline salve or a sponge moistened with a saline solution at each of the ankle connections. It is of the utmost importance that good circuit continuity, with a minimum amount of resistance, be maintained at the electrode contacts. Further, a minimum of 2000 volts ac must be maintained, after voltage drop, to guarantee permanent disruption of the functioning of the autonomic nervous system. Voltages lower than 2000 volts ac, at saturation, cannot guarantee heart death and are, thus, not adequate for electrocution, in that they may cause unnecessary trauma to the subject prior to death. Failure to adhere to these basic requirements could result in pain to the subject and failure to achieve heart death, leaving a brain dead subject in the chair.
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