Auditory brainstem response in neonates: influence of gender and weight/gestational age ratio

Revista Paulista de Pediatria

Rosanna M. Giaffredo Angrisani¹  Ana Paula D. Bautzer¹  Carla Gentile Matas¹  Marisa Frasson De Azevedo¹ 

关键词: evoked potentials;    auditory;    brain stem;    auditory perception;    hearing disorders;    infant;    newborn;    potenciales evocados auditivos del tronco encefálico;    percepción auditiva;    trastornos de la audición;    recién nacido;    potenciais evocados auditivos do tronco encefálico;    percepção auditiva;    transtornos da audição;    recém-nascido;   

DOI  :  10.1590/S0103-05822013000400012

来源: SciELO

【 摘 要 】

OBJECTIVE: To investigate the influence of gender and weight/gestational age ratio on the Auditory Brainstem Response (ABR) in preterm (PT) and term (T) newborns. METHODS: 176 newborns were evaluated by ABR; 88 were preterm infants - 44 females (22 small and 22 appropriate for gestational age) and 44 males (22 small and 22 appropriate for gestational age). The preterm infants were compared to 88 term infants - 44 females (22 small and 22 appropriate for gestational age) and 44 males (22 small and 22 appropriate for gestational age). All newborns had bilateral presence of transient otoacoustic emissions and type A tympanometry. RESULTS: No interaural differences were found. ABR response did not differentiate newborns regarding weight/gestational age in males and females. Term newborn females showed statistically shorter absolute latencies (except on wave I) than males. This finding did not occur in preterm infants, who had longer latencies than term newborns, regardless of gender. CONCLUSIONS: Gender and gestational age influence term infants' ABR, with lower responses in females. The weight/gestational age ratio did not influence ABR response in either groups.

【 授权许可】

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