Related Experiment Videos
[Sensorineural hearing loss in children starting school. Results of a representative hearing screening study]
B Kruppa1, H G Dieroff, H Ising
1Umweltbundesamt, Institut für Wasser-, Boden- und Lufthygiene, Berlin.
Insights
High-frequency hearing loss was identified in 4% of 6-7 year olds using advanced audiometry. Unilateral sensorineural hearing loss, linked to noise toys, was more prevalent than bilateral loss.
Area of Science:
- Pediatric Audiology
- Occupational Health
- Public Health
Context:
- Preschool medical examinations are crucial for early detection of health issues in children.
- Standard audiometric screening methods may not always detect subtle high-frequency hearing impairments.
- Improved audiometric screening methods enhance the accuracy of hearing threshold assessments.
Purpose:
- To assess the prevalence of hearing impairment in 6-7 year old children using advanced audiometric screening.
- To identify the type and laterality of hearing loss in the pediatric population.
- To investigate potential causes of high-frequency sensorineural hearing loss in children.
Summary:
- Audiograms were conducted on 2032 children aged 6-7 years. 7.4% exhibited hearing thresholds above 20 dB at specific frequencies.
- A significant subset of 4% showed sensorineural hearing loss, characterized by a > or = 10 dB difference at high frequencies (3-6 kHz) compared to lower frequencies (1-2 kHz).
- Unilateral hearing loss was more common (2.5%) than bilateral loss (1.6%), suggesting localized auditory damage.
Impact:
- Findings highlight the prevalence of high-frequency hearing loss in young children, often linked to recreational noise exposure.
- The study underscores the importance of targeted high-frequency hearing assessments in pediatric audiology.
- Results suggest a correlation between impulse noise from toys and unilateral sensorineural hearing loss, informing parental guidance and public health initiatives.
Abstract:
Audiograms in the 0.5-6 kHz frequency range were taken, using improved audiometric screening methods, in 2032 children, 6-7 years old, who were undergoing their pre-school medical examinations. In 151 children (7.4%), the threshold for hearing was above 20 dB for at least one frequency. Of these, 82 children (4% of the overall sample) had a hearing impairment defined as a difference of > or = 10 dB between at least one frequency (3, 4 or 6 kHz) and the mean value from 1+2 kHz. This was evaluated as a sensorineural hearing loss. Unilateral losses (lateral difference > or = 10 dB) were more common than bilateral losses (2.5% vs 1.6% of the overall sample). These unilateral hearing losses in the high-frequency range are essentially regarded as the result of playing with impulse-noise producing toys, such as toy guns with caps.