Brain stem evoked response audiometry in neonates.
Indian Pediatr
;
1989 Jun; 26(6): 566-70
Artigo
em Inglês
| IMSEAR
| ID: sea-6284
ABSTRACT
Brain stem evoked response audiometry (BERA) was performed in 50 normal full term newborn infants (25 male, 25 female) to generate normative data base for this age group. The stimuli of 30 dB, 40 dB and 80 dB nHL (normal hearing level) intensities were delivered to each subjects. 30 dB stimulus failed to produce clear wave patterns, whereas upto six vertex positive waves were recognised among which waves I, III and V were commonly present. The absolute latencies of waves I and V at 40 dB nJL were 2.54 +/- 0.21 msec and 7.56 +/- 0.26 msec and at 80 dB nHL these were 2.06 +/- 0.15 msec and 7.09 +/- 0.17 msec respectively. I-V interpeak latencies (IPL) were 5.02 +/- 0.13 msec at 40 dB and 5.03 +/- 0.13 at 80 dB nHL. The latencies of waves I and V were decreased with the increase of intensity of stimuli with the rate of 0.012 msec/dB, bit I-V IPL, i.e., central conduction time remained almost constant. There were no statistically significant differences in the brain stem auditory evoked responses between male and female subjects. Brain stem evoked response audiometry is objective and reliable for hearing screening in neonates.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Tempo de Reação
/
Audiometria de Resposta Evocada
/
Tronco Encefálico
/
Feminino
/
Humanos
/
Masculino
/
Recém-Nascido
/
Fatores de Risco
/
Triagem Neonatal
/
Surdez
Tipo de estudo:
Estudo de etiologia
/
Fatores de risco
Idioma:
Inglês
Revista:
Indian Pediatr
Ano de publicação:
1989
Tipo de documento:
Artigo
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