OBJECTIVE: To assess short- and middle-latency waves evoked potentials in children with history of neonatal hypoxic ischemic encephalopaty (HIE). SETTING: Guillermo Almenara Irigoyen Hospital Neurophysiology Unit, Lima - Peru. MATERIAL AND METHODS: Auditory evoked potential recordings of short (BAEP) and middle (MAEP) latency waves in seventy-eight children, aged 0 to 4 year-old, with history of HIE were performed. Children were classified according to the HIE degree. RESULTS: BAEPs were present in 68% of the patients, and there was not differences of statistical significance between groups. MAEPs were absent in 77% of the patients, especially in those who showed moderate and severe grades of HIE (90%) (p <0,005). CONCLUSION: It is possible that the moderate or severe HIE’s damage at the corticoreticulothalamocortical path produces absence of MAEP waves.

Objective: To study 29 individuals belonging to four familiar generations in whom 9 cases of facial paralysis was found in 2 generations. Setting: Neurophysiology Service, Guillermo Almenara Irigoyen National Hospital. Material and Methods: Neurological exam and electrophysiologic (EMG and VCN), otorrhinolaryngologic, radiologic, electroencephalographic, dermatoglyphic and laboratory studies were performed in 7 of the 9 patients (5 men and 2 women). Results: One case of right peripheral facial paralysis in the second generation and 6 cases of left peripheral facial paralysis in the third generation were found, all associated to prolonged congenital enuresis. Conclusions: Study of the 29 persons pedigree determined that 9 of them had hereditary familiar peripheral facial neuropathy, probably dominant type with reduced penetrance.

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