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TASER Electronic Control Devices Review Of Safety Literature

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electrodes are elsewhere on the body, as they are in the large majority of cases<br />

when the <strong>TASER</strong> device is used, the percentage of applied current that traverses<br />

the heart is even less. Also, drive-stun applications delivers even less current below<br />

the surface of the body.<br />

Figure 10. ECD current tends to follow the grain of the skeletal muscles. Very little penetrates<br />

the body below the muscles. (Note: this illustration is not to scale, nor does it illustrate<br />

the optimal electrical impulse vulnerable probe positions). Used with permission of<br />

IEEE Spectrum.<br />

MRI (Magnetic Resonance Imaging) studies show that electrical current has an<br />

additional impediment passing between the intercostal (between the ribs) muscles<br />

and the cardiac muscles, as their fibers are perpendicular to one another. 79<br />

Careful computer modeling studies show that very little current goes more than<br />

1 cm below the skin. 43,80,81 The safety factors are summarized in Table 3.<br />

2.8 Longer <strong>TASER</strong> ECD Applications Do Not Cause Arrhythmias<br />

VF can be induced by sufficiently strong electrical current flowing through the<br />

body. The current that is required to cause VF is dependent on the length of time<br />

for which the current is applied, but it is well established that the induction<br />

38

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