RESUMO
El motivo de esta publicación es comentar la secuencia clínica del caso de una niña de seis años con sordera neurosensorial bilateral profunda y tardía (poslocutiva), después de una infección congénita por citomegalo-virus (CMV) sin aparentes secuelas neurológicas. Analizamos las posibilidades de identificación de los defectos auditivos en el seguimiento de los pacientes de alto riesgo por los pediatras y resumimos brevemente los criterios actuales de selección de los candidatos a implante coclear en la infancia (AU)
Assuntos
Feminino , Criança , Humanos , Perda Auditiva Neurossensorial/etiologia , Infecções por Citomegalovirus/complicações , Implante Coclear/métodos , Perda Auditiva Neurossensorial/cirurgia , Potenciais Evocados Auditivos , Infecções por Citomegalovirus/congênito , Testes de Impedância AcústicaRESUMO
Electroretinogram (ERG) changes with age have been studied widely, but there is no general agreement about the age at which ERG parameters reach adult values. We studied 296 eyes from 148 healthy subjects, divided into 14 age groups, ranging from 1 week to 21 years. Although most of the maturational changes or ERG take place during the first six months, the a wave completes development at three years of age and the b component shows a smooth increase in latency between 3 and 18-21 years. The latter component also shows an increase in amplitude from 7-8 to 12-14 years. During the first period of maturation the b wave parameters follow a multiplicative model. These data are discussed in relation to previously reported findings on ERG maturation and to morphological and functional eye changes with age.
