MATURATION OF SENSORY NERVE CON-DUCTlON IN CHILDREN AGED YEARS
Zhang Jmein;Cai Fangcheng(Chddren’s Hos-pilof, Chongqing Universdy of Medical Sci-emes. Chongqing 630014)
he norms and maturation of sensory nerve con-duction were investigated based on the data from 144normal children aged 0～14 years. Definite potentialswere obtained with surface electrede in most subjects.The age under 1 year would be a critical time for the de-velopment of sensory nerve , since sensory nerve conduc-tion velocity (SNCV) in upper extremity was equal to40% of adult value in newborns , 50% at 3 months afterbirth , 75 /00 at 1 year , and adult level in 6 years , respec-tively. The SNCV along sural nerve was about 50% atbirth, 75% at six months, and reached the adult levelat 3 years. The resuhs also showed that the develop-ment of SNCVs was faster in lower extremities than theupper. The amplitudes of potential were about 1/3～14 of adult value at birth, 50% at 1 year and equal toadult in 6 ～4 years old children. The wave forms ofpotentials at proximity in upper extremity were splittedas two peaks in all children but in newborn or adult,which indicated that there were two kinds of sensorynerve fibers with different maturational paces. Sensorynerve conduction developed with age and determinationof SNCV is an important clinical electro neurophysi-ological test for peripheral nerve diseases in pediatricpractice.
【CateGory Index】： R338.1