Abstract
Objective: To establish normal values of motor and sensory nerve conductions and late responses for the electrodiagnostic laboratory of the hospital universitario San Ignacio.
 Materials and Methods: Sensory and motor nerve conduction studies were performed on 77 healthy volunteers between 18 and 65 years old, for a total of 154 analyzes, using a standardized technique for measurement.
 Results: Motor nerve conduction. For the median nerve the latency ≤4.2ms, amplitude ≥3.1mV and conduction velocity ≥50.8m/s. In the ulnar nerve the latency ≤3.6ms, amplitude ≥4.6mV and conduction velocity ≥49m/s. Tibial nerve latency ≤4.4ms, amplitude ≥5mV and conduction velocity ≥41m/s. Peroneal nerve latency ≤4.8ms, amplitude ≥1.6mV and conduction velocity ≥42m/s. Sensory nerve conduction. For the median nerve the latency ≤2.8ms and conduction velocity ≥45m/s. In the ulnar nerve the latency ≤2.7ms and conduction velocity ≥46m/s. Sural nerve latency ≤2.2ms and conduction velocity ≥41m/s. A Shapiro Wilk test was performed, finding that the amplitude parameters for sensory nerve conductions did not follow a normal distribution, so percentile analysis was performed. Only sex showed a statistically significant difference for the parameters of tibial nerve amplitude (p = 0.0099) being greater in women, and latency of the peroneal nerve (p = 0.0091) being greater in men.
 Conclusion: Normal parameters were established for motor and sensory nerve conductions and late responses for the electrodiagnostic laboratory of the hospital universitario San Ignacio, which mostly correlate with the current reference data, with certain differences that could be related with height and sex, however, additional studies are required to establish this difference.
Highlights
Electrodiagnostic studies are an important tool in diseases that affect both the peripheral and central nervous system
Most of the normality parameters for nerve conduction and late response studies used for the population of Hospital Universitario San Ignacio and, in general, for Latin American countries were extrapolated from Buschbacher studies of 1999 [1,2,3,4,5,6,7]
The aim of this study is to find the normality values for motor nerve conductions of the median, ulnar, tibial and peroneal nerves, sensory nerve conductions of the median, ulnar and sural nerves, and normality values for the F-wave and H-reflex latencies for the Electrodiagnostic Laboratory of Hospital Universitario San Ignacio
Summary
Electrodiagnostic studies are an important tool in diseases that affect both the peripheral and central nervous system. Neuroconduction studies are non-invasive medical procedures that help evaluate neuromuscular diseases because they provide a physiological assessment of the peripheral nerve, muscle, neuromuscular junction, dorsal root ganglion neuron and anterior horn neuron. Motor nerve conduction studies assess the motor axons by selectively recording the muscle response to nerve stimulation. Sensory nerve conduction studies evaluate sensory axons by recording directly from the peripheral nerves [1]. Most of the normality parameters for nerve conduction and late response studies used for the population of Hospital Universitario San Ignacio and, in general, for Latin American countries were extrapolated from Buschbacher studies of 1999 [1,2,3,4,5,6,7]. There were important differences in the characteristics of the population selected for these studies
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