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Int J Pediatr Otorhinolaryngol. 2008 May;72(5):609-17. doi: 10.1016/j.ijporl.2008.01.020. Epub 2008 Mar 5.

The prediction of hearing thresholds with auditory steady-state responses for cochlear implanted children.

Author information

1
Department of Otolaryngology, Chang Gung Memorial Hospital - Kaohsiung Medical Center, Chang Gung University College of Medicine, 123, Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan, ROC.

Abstract

OBJECTIVES:

The objectives of this study were to investigate the efficacy of auditory steady-state response (ASSR) in predicting cochlear implanted children's actual behavioural thresholds at various frequencies.

METHODS:

Twenty-two children with cochlear implants (Nucleus 24 devices) participated in this study. Behavioural thresholds and/or ASSR in cochlear implanted children were obtained to determine the predictive accuracy rates and errors by comparing the estimated range of thresholds with the actual behavioural thresholds.

RESULTS:

Stable ASSR threshold results were obtained in 22 cochlear implanted children. The predictive accuracy rates were the highest and prediction errors were the smallest at 4000 Hz, among the four tested frequencies, using either the Rance 1995 or the Rance 2002 linear regression formulae. The Rance 2002 regression formulae had a higher predictive accuracy and fewer errors than the Rance 1995 regression formulae in predicting the hearing threshold of cochlear implanted patients at all tested frequencies.

CONCLUSIONS:

Both behavioural thresholds and ASSR thresholds revealed significant improvements after cochlear implantation. ASSR may be used as a tool in predicting hearing thresholds after cochlear implantation in children. The predictive accuracy is best at 4000 Hz with the Rance 2002 linear regression formulae.

PMID:
18325602
DOI:
10.1016/j.ijporl.2008.01.020
[Indexed for MEDLINE]

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