P300: electrophysiological avaliation of hearing in children who have never repeated and who have repeated at school

摘要

AIM: This research was done with the objective to compare the values of latency of P300 in male and female kids 8 to 13 years of age, who have repeated at least a semester and who have not repeated any semester at school. STUDY DESIGN: Clinical study with transversal cohort. MATERIAL AND METHOD: Sixty kids who have never flunked at school and 43 kids who have already flunked were examined in public schools in Santa Maria. All kids were submitted to an anamnesis, pure tone audiometry, tympanometric curve, contra lateral reflexes auditory and P300. RESULTS AND CONCLUSION: At the end of this research it can be concluded that kids that have not repeated any year at school presented mean arithmetic latency value of P300 lower (332,25 ms), when compared to kids that have repeated (413,23 ms). Female children of the group that has no failure history at school have presented a mean arithmetic latency value of P300 lower (328,37 ms) than male kids (337,68 ms) of the same group. In the group of kids with failure history, the female kids have also shown mean arithmetic latency value of P300 lower (387,50 ms), compared to the male kids (423,19 ms). Finally lower mean arithmetic values of latency of P300 were observed in the group of both female (328,37 ms) and male kids (337,68 ms) who have not repeated at school when compared to the mean arithmetic values of latency of P300 in female (387,50 ms) and male kids (423,19 ms) who have repeated at school.