Research On Pattern Reversal Visual Evoked Potential Of Spastic Cerebral Palsy Children

Objective: To explore the judgment of pattern reversal visual evoked potential on visual function and injured part of children with spastic cerebral palsy.Methods: There were two groups in this study. 30 children with spastic cerebral palsy(quadriplegia:15, diplegia:15) were selected as observation group, while 30 normal children were selected as control group with randomized controlled trial. The changes of half-view and full-view incubation period and amplitude were observed by pattern reversal visual evoked potential.Results: Full-view pattern reversal visual evoked potential: the P100 incubation period of the observation group was 119.93±9.18 ms, and the P100 amplitude was 23.08±15.41 μv. The P100 incubation period of the control group was 105.05±5.58 ms, and the P100 amplitude was 31.65±7.37 μv. From the comparison on P100 incubation and P100 amplitude between two groups, the difference was statistically significant(P<0.05). P100 incubation period of the spastic diplegia of full-view pattern reversal visual evoked potential was 112.73±7.22 ms, and the P100 amplitude was 21.03±12.17 μv. P100 incubation period of the spastic quadriplegia was 114.37±9.02 ms, and the P100 amplitude was 25.14±18.06 μv. From the comparison on P100 incubation and P100 amplitude between two groups, the difference had no statistically significance(P>0.05). Compared to the control group, each eye and each view latency of observation group were higher, the difference was statistically significant(P<0.05). The change of the incubation period of the full-view and half-view pattern reversal visual evoked potential takes place in the lesion of the visual pathway: including optic neuropathy, some optic nerve lesion, lesion after optic chiasma, and optic chiasma lesion. Among them, the lesion after the optic chiasma was the most common.Conclusions: Pattern reversal visual evoked potential can help people understand the visual impairment and injury of children with spastic cerebral palsy in order to identify the abnormal children and early intervention.