Study on the normal value of motor conduction velocity and F-wave parameters in median and ulnar nerves in normal adults / 临床神经病学杂志

ABSTRACT

Objective To study the normal value on the motor conduction velocity(MCV) and F wave parameters in normal adults at different age,sex,and provide reasonable datum for clinic.Methods 155 healthy volunteers (male for 76 cases, female for 79 cases,age from 18 to 82 years old) were used as subjects.Distal latency,proximal latency, MCV,F wave latency,the duration between F and M waves (F MIPL),F wave conduction velocity (FCV) as well as the F wave ratio were recorded in bilateral median and ulnar nerves, F wave were elicited with stimulation at wrist.Results There were significant differences in M wave latency, MCV, FwPL, F MIPL and FCV between the different groups of age and sex, the latency of each individual wave was shorter in the female than in the male.the conduction velocity(CV) of the female was faster than the male. No significant differences in the F wave ratio were found between male and female, left and right limbs for the same nerve,median and ulnar nerves in the same Limb and in individuals at different age.MCV was usually faster in the proximal than in the distal.Conclusion MCV and F wave parameters changed progressively with increasing age. There were respective normal values in different age group and sex,F wave ratio might provide information in evaluating nerve conduction function in both of the proximal and distal end.