Playing “Russian Roulette” With The Heart...
As the deaths have increased, several medical experts have attempted to provide explanations for how Tasers may contribute to deaths. The Taser works by delivering 50,000 volts of energy—albeit at a very low amperage—to the body, causing a disruption of its electrical energy pulses and locking up the muscles. While the shock alone does not cause injury or death in most cases, it may be fatal if it hits the subject during the vulnerable period of the heart beat cycle, is used on particularly susceptible populations, or is used multiple times and for an extended time period. According to Dr. Zian Tseng, cardiologist at the University of California at San Francisco, if the Taser sends its energy to the heart at the wrong time, the electricity may cause ventricular fibrillation, a state in which the heart muscles spasm uncontrollably, disrupting the hearts pumping function and causing death.
Dr. Kathy Glatter of the University of California Davis Medical School agrees: “If I hit the heart or create electricity in the wrong time of the (beat) cycle, it could send the whole heart into an electrical tailspin.” Further, certain populations may be more susceptible to ventricular fibrillation as a result of a Taser shock. Children, for example, being smaller than adults, may be at greater risk from a taser shock. According to Roger Barr, professor of Bioengineering at Duke University, the size of the individual is important “because the same amount of current is injected by the device, whatever the size of the person. So when the person is a small person, whether they be a child or a small adult or whatever, current intensity, the amount that’s fl owing in any one space, is greater. And any sort of damage that occurs will be greater because the current intensity is greater”.
Drug users may also be more vulnerable because of the effects that drugs have on the heart. Again, Dr. Tseng: “I’ve seen the Taser folks say, ‘Oh, the guy had cocaine in his system, that’s the reason for his death.’ Well, someone with cocaine in their system is also much more prone to a Taser-induced cardiac arrest. They cannot say that it’s safe in my opinion.” The same is also true for certain medications that are used to treat psychiatric
problems.
According to Dr. Tseng, “I think they are dangerous... you are shocking someone repeatedly, it becomes a bit like Russian Roulette. At some point, you may hit that vulnerable period.” Second, research on pigs by Dr. James Jauchem indicates that multiple shocks can lead to an increase in blood acid levels and the enzyme Troponin T. While Dr. Jauchem indicated that the levels he found in his research would only require additional monitoring, other medical experts took his findings to be more significant. According to
Dr. Charles Rackley, cardiologist at the Georgetown University Hospital, if a patient came to see him with similar symptoms to those Dr. Jauchem found in his experiments, his “initial impression would be that meant some heart muscle damage, or heart attack.The combination of the acidosis as well as the heart muscle damage would put this patient at high risk of developing ventricular fibrillation or sudden cardiac death.”
A Dearth of Independent Studies While several medical experts have indicated that Tasers—in certain situations—can be lethal, there has been very little independent study on the medical eff ects of Tasers. And, what few independent studies there are have been largely limited to surveying the existing medical literature, analyzing Taser International’s database, and conducting studies on the effects of Tasers on healthy people, studies that do not address the vulnerable populations discussed above.