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Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

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Neonatal Murine Cochlear Explant Technique as an In Vitro Screening Tool in Hearing Research

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Neonatal hearing screening in Benin City.

Amina L Okhakhu¹, Titus S Ibekwe, Ayebo S Sadoh

¹ENT Department, University of Benin Teaching Hospital, Benin City, Nigeria.

International Journal of Pediatric Otorhinolaryngology

|September 25, 2010

Summary

Congenital hearing loss affects 6.5% of newborns in Benin City, highlighting the critical need for early hearing screening in developing nations. Prompt intervention is essential to prevent developmental delays and speech acquisition issues.

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Area of Science:

Medical Research
Public Health
Pediatrics

Background:

Congenital hearing loss is a significant health issue impacting child development.
Early detection and intervention are crucial for speech and cognitive development.
Neonatal hearing screening is vital, especially in developing regions.

Purpose of the Study:

To determine the crude prevalence of congenital hearing loss in newborns in Benin City.
To emphasize the importance of neonatal hearing screening for early intervention.

Main Methods:

Distortion product otoacoustic emissions (DPOAE) were used to screen 400 neonates in Benin City.
Screening was conducted using a handheld otoacoustic machine (MAICO 8172).
Data analysis was performed using SPSS 11.

Main Results:

A total of 400 neonates were screened.
Ninety neonates (22.5%) were referred for further evaluation.
Bilateral hearing loss was identified in 6.5% of neonates, and unilateral loss in 16%.

Conclusions:

The study indicates a high prevalence of bilateral neonatal hearing impairment in Benin City.
Confirmation and intervention are necessary for affected neonates.
The findings support the necessity of universal newborn hearing screening in developing countries.