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Is the Level of Noise in a School Environment be Harmful to the Hearing of Teachers? | LitMetric

Is the Level of Noise in a School Environment be Harmful to the Hearing of Teachers?

Int Arch Otorhinolaryngol

Laboratory of Otorhinolaringology Research, Universidade de Brasília, Brasília, DF, Brazil.

Published: October 2020

AI Article Synopsis

  • Excessive noise in school environments can negatively impact the learning process and pose health risks, including hearing loss, for both teachers and students.
  • A study was conducted with 67 teachers to assess the effects of classroom noise on otoacoustic emissions, specifically looking at the amplitude and signal-to-noise ratio (SNR) of their hearing before and after teaching.
  • Results showed a significant decrease in otoacoustic emissions after teachers were exposed to classroom noise, indicating potential temporary or permanent damage to their hearing from prolonged exposure to high sound levels.

Article Abstract

 The excessive noise observed in the school environment can cause damages or losses to the learning process as well as risks to the health of teachers and students, such as physical, mental and social impairments, including, among them, hearing loss.  To assess otoacoustic emissions in teachers and determine whether classroom noise reduces distortion-product otoacoustic emissions (DPOAEs) amplitude and signal-to-noise ratio (SNR).  Sixty-seven teachers were evaluated using otoacoustic emissions testing in two situations: after hearing rest and after the working day.  Signal amplitude (  = 0.044 [2 kHz];  = 0.01 [4 kHz]) and SNR for frequencies of 2 kHz (  = 0.008) and 4 kHz (  = 0.001) decreased significantly between time points. Mean classroom noise was associated with the magnitude of the difference in signal amplitude at 2 kHz (  = 0.017) and 4 kHz (  = 0.015), and SNR at 4 kHz (  = 0.023).  There was a decrease in the amplitude and in the SNR after exposure to the noise in the classroom environment. The high levels of sound pressure that teachers are exposed to on a daily basis can cause a temporary change in the outer hair cells of the Corti organ, and these changes may become permanent over time.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7575397PMC
http://dx.doi.org/10.1055/s-0040-1702969DOI Listing

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