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:: Volume 23, Issue 1 (4-2014) ::
aud 2014, 23(1): 1-9 Back to browse issues page
The effect of side-lying position on the parameters of transient evoked otoacoustic emission
Vida Rahimi1, Saeid Farahani 1, Masumeh Amere1, Saman Maroufizade2
1- Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Iran
2- Department of Biostatistics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
Abstract:   (15782 Views)

Background and Aim: One of the non-pathological factors affect otoacoustic emissions is body position. In the present study, the effect of side-lying position on evoked otoacoustic emission properties and related existing assumptions were investigated.

Methods: The cross-sectional study was performed on 42 adults aged 18-25 years. The results of Transient-evoked otoacoustic emissions (TEOAEs) test were recorded and analyzed in sitting, supine, and side-lying (Ipsi and Contra) positions to compare the total response level, whole wave reproducibility, signal to noise ratio in frequencies of 1 to 5 KHz, and the lasting time of the test.

Results: Changing of the body position had a significant effect on total response level, whole wave reproducibility, and lasting time of the test (p<0.010) while this effect on signal to noise ratio was just found at 1 KHz (p<0.001). The highest total response level and lowest lasting time of the test values were observed in side-lying (contra) position (p<0.050).

Conclusion: Side-lying position (contra) is the best position for the TEOAEs test. The results of this study partly confirm intracranial pressure change hypothesis that intracochlear fluid pressure increase in the auditory system although there are contradictions in this field.
Keywords: Transient-evoked otoacoustic emissions, body position, intracranial pressure, side-lying position
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Type of Study: Research |
Received: 2012/12/18 | Accepted: 2013/03/11 | Published: 2014/01/1
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Volume 23, Issue 1 (4-2014) Back to browse issues page
شنوایی شناسی - دانشگاه علوم پزشکی تهران Bimonthly Audiology - Tehran University of Medical Sciences
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