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Volume Conduction

Volume conduction is defined as the current trans­mission from a potential source through a conducting medium, such as the body tissues. This may produce depolarization of peripheral nerves in proximity to the specific nerve being studied, and this is particularly problematic in smaller children with less soft tissue separating nerves.

For example, volume conduction can produce simultaneous stimulation of both the median and ulnar nerves at the wrist or at the elbow. Such volume conduction should always be suspected when higher stimulation intensities or durations are utilized and when CMAP configurations show an initial posi­tive deflection or a multiple peak configuration.

difference

Data are presented as means ± SD

Minimum F-wave latency from 10 recordings

w, wrist stimulation; e, elbow stimulation; a, ankle stimulation; k, knee stimulation Side-to-side difference shows mean ± SD (upper limits of normal)

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Source: Alexander M.A., Matthews D.J.. Pediatric Rehabilitation: Principles and Practice. 4 th. ĺd. — New York: Demos Medical Publishing,2010. — 540 đ.. 2010
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