Dipti Bania 1 , Padmaja Barua 2 , Geeta Barua 3
INTRODUCTION Goal of our work was to establish the data of normal nerve conduction velocity (NCV) for the median and the ulnar nerves in normal healthy adults in Barpeta town area, Assam, India. METHODS Nerve conduction studies were performed prospectively in the upper limbs of 100 carefully screened, healthy individuals of either sex, who were between the ages of 20 and 60 years, by using a standardized technique. RESULTS: MOTOR STUDIES The median distal latency (DL) in men was 3.48 (0.26) ms, the amplitude (CMAPA) was 9.86 (1.92) mV, the conduction velocity (MNCV) was 55.94 (2.94) m/s and the F-wave (min latency) was 26.86 (2.12) minute. In the ulnar nerve, the motor DL was 2.3 (0.26) ms, the amplitude (CMAPA) was 9.97 (3.90) mV, MNCV was 62.97 (3.90) m/s and the F-Wave (min latency) was 25.98±2.41. In the sensory studies, the median nerve DL was 1.89 (0.25) ms, SNCV was 53.14±3.80 m/s and the amplitude (SNAPA) was 42.69 (20.48) μV for was. For the ulnar nerve the DL was 1.89 (0.36) ms, SNCV was 56.86 (6.23) m/s and the amplitude (SNAPA) was 40.92 (168.4) μV. CONCLUSION The normative conduction parameters of the commonly tested nerves in the upper limb were established in research laboratory of physiology department of our institute. The mean motor nerve conduction parameters for the median and the ulnar nerves correlated favorably with the existing literature data. However, for the sensory nerves, a higher value for the nerve action potential amplitude was demonstrated in this study.
