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Five Myths in Assessing the Effects of Noise on Hearing William W…

    https://www.audiologyonline.com/articles/five-myths-in-assessing-effects-1292#:~:text=Myth%201%3A%20A%20notch%20at%204%20kHz%20is,the%20notch%20is%20present%2C%20noise%20was%20the%20cause.
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Audiogram notches in noise-exposed workers

    https://pubmed.ncbi.nlm.nih.gov/17086083/
    Notch depth and professional specialty appeared to affect notch judgments. Despite this variability, a notch metric showed excellent agreement with expert notch consensus in each sample (94.7 and 96.6%; kappa = 0.88 and 0.92). Conclusions: Audiogram notch metrics can agree with expert clinical consensus and assist in the surveillance of noise-exposed workers.

Notched Audiograms and Noise Exposure History in …

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2811687/
    This may be reflected in the audiogram as hearing thresholds that reach a maximum between 3–6 kHz and then return toward the normal level at higher frequencies, forming a noise notch. A notched audiogram, together with a positive history of noise exposure, has been gradually accepted as a clinical sign of NIHL (McBride & Williams, 2001).

Audiometric notch as a sign of noise induced hearing …

    https://oem.bmj.com/content/58/1/46
    OBJECTIVES To investigate the relation between different types of exposure to noise and a classic sign of noise induced hearing loss (NIHL), the audiometric notch. METHODS The study sample had exposure to both continuous and impulse noise and was drawn from a population of electrical transmission workers. Audiograms, taken as part of a hearing …

Audiometric notch as a sign of noise induced hearing loss

    https://oem.bmj.com/content/oemed/58/1/46.full.pdf
    noise and a classic sign of noise induced hearing loss (NIHL), the audiometric notch. Methods—The study sample had exposure to both continuous and impulse noise and was drawn from a population of electrical transmission workers. Audiograms, taken as part of a hearing conservation pro-gramme, were read by three clinicians

Noise induced hearing loss - audiogram - Audiometric ...

    https://www.audiometrictestingperth.com.au/noise-induced-hearing-loss/
    The results of a hearing test, or audiometric test, are recorded on an audiogram. An audiogram is used to chart the results according to loudness (dB) and pitch (Hz).On an audiogram, noise induced hearing loss (NIHL) will usually be seen first as a slight loss of hearing in the 4 kHz region. This dip in hearing is more commonly known as a ‘notch’ in the audiogram.

Noise-Induced Hearing Loss - American Family Physician

    https://www.aafp.org/afp/2000/0501/p2749.html
    A confirmatory audiogram taken by an audiologist showed a sensorineural loss in a “notch” pattern at 4,000 Hz ( Figure 1). In response to questioning, the girl reported spending several hours a day...

Clinical and audiological characteristics of 1000Hz ...

    https://pubmed.ncbi.nlm.nih.gov/28532971/
    Purpose: Among the hearing loss patients, we can confirm that the hearing loss of the specific frequency decreases, such as the 2000Hz notch in otosclerosis and the 4000Hz notch (c5-dip) in noise-induced hearing loss. The 1000Hz notch (c3-dip), however, is rarely studied.

A clinician’s guide to noise-induced hearing loss - WCB

    https://www.wcb.ab.ca/assets/pdfs/providers/HCP_Hearing_loss.pdf
    On an audiogram, the configuration of the hearing loss reveals a distinctive notch—typically greatest at 4000 Hz—sometimes referred to as a ‘noise notch’.

Noise -induced Hearing Loss - CAOHC

    https://www.caohc.org/pdfs/ACOEM%20noise%20induced%20hearing%20loss.pdf
    1. ACOM Noise and Hearing Conservation Committee. Occupational noise-induced hearing loss. JOM. 1989;31(12):996. 2. McBride DI, Williams S. Audiometric notch as a sign of noise induced hearing loss. Occup Environ Med. 2001;58(1):46-51. 3. Coles RR, Lutman ME, Buffin JT. Guidelines on the diagnosis of noise-induced hearing loss for medicolegal ...

Five Myths in Assessing the Effects of Noise on Hearing ...

    https://www.audiologyonline.com/articles/five-myths-in-assessing-effects-1292
    Myth 1: A notch at 4 kHz is called a ''noise notch'' and it means that the hearing loss was caused or contributed to by noise exposure. It is not uncommon to refer to the characteristic notching of the audiogram as a ''noise notch'', and to assume that if the notch is present, noise was the cause.

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