Distortion product otoacoustic emissions in patients with King-Kopetzky syndrome.

Full Abstract

In the present study, mild impairment of cochlear function in patients with King-Kopetzky syndrome was investigated using DPOAEs. A significant decrease in DPOAE levels in both ears was found in patients with King-Kopetzky syndrome compared with the controls after considering the thresholds as a co-variable. It is noteworthy that the global mean levels of DPOAEs were still significantly greater in controls than in patients with matched thresholds. Further frequency analyses showed a significant decrease in DPOAE levels over the mid- and high-frequency range in patients with better hearing thresholds when compared with those in the control group. Moreover, significantly smaller DPOAEs were found in the ears of patients with King-Kopetzky syndrome and without SOAEs, than in such ears of control subjects after considering the thresholds as a co-variable. However, when SOAEs were present there was no difference. Decreases in DPOAE level appear to represent evidence of minor cochlear pathology, and provide a pathological basis for the difficulty of hearing speech in the presence of background noise, which characterizes King-Kopetzky syndrome.

Author information

Author/s: Zhao, Fei (F); Stephens, Dafydd (D);

Affiliation: School of Health Science University of Wales Swansea, Swansea, UK. f.zhao(-atsign-)swan.ac.uk

Journal and publication information

Publication Type: Journal Article

Journal: International journal of audiology (Int J Audiol), published in England. (Language: eng)

Reference: 2006-Jan; vol 45 (issue 1) : pp 34-9

Dates: Created 2006/03/27; Completed 2006/06/26;

PMID: 16562562, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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