Medical Faculty Journal of

Guilan University of Medical Sciences

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Normal Values of Median, Ulnar and

Radial Nerves Conduction in

Healthy Adults (20-59 years)

Noormohamadi Sh., Vali nezhad E.

ABSTRACT :

The object of this study is determination of normative values of nerve conduction studies (NCS) among the population of Guilan Province.

We selected 216 at the ages of 20-59yr on the basis of their medical histories and examination , and on condition that they had no factors or diseases interfering with nerve conduction by convenience sampling method. In this cross-sectional study, the motor amplitude (AMP), nerve conduction~ velocity (NCV), distal latency (DL) and sensory amplitude, and peak latency (PL) of Median , Ulnar, and Radial in no dominant hand were determined.

%95 was recognized as cut-off and normal values; and mann- whiteney test (a = 0.05) was used to compare means.

5% of Median, Ulnar, and Radial sensory AMP in no dominant hand were 37.2, 33, and 18.9 /LV, respectively. 5% of motor AMP Were 5.2 , 4.5 , and 2.5 MV, respectively. The 5th percentile of motor NCV were 54, 52.3 , and 51.8 MIS , respectively. 95% of sensory PL were 3.8, 3.9 , and 3.1 ms , respectively. 95% of motor DL were 4.2, 3.9, and 3.3 ms respectively. There has been no significant difference in sex about in nerve conduction, but there has been a significant difference in motor AMP and NCV , and sensory AMP study results between age groups of under and over 60 (P<0.001).

As regards to functional conditions of this center , we present the above-mentioned values as the normal values for use in conduction nerve studies in Poursina Electro diagnostic Center ; Rasht.

Key words: Median Nerve/ Neural conduction/ Radial Nerve/ Ulnar Nerve.

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 Last Update :  27 November 2003