An STS on an audiogram is recognized when there is a decrease of how many dB at specified frequencies?

A Standard Threshold Shift (STS) on an audiogram is identified when there is a notable decrease of 10 dB or more at certain specified frequencies, typically around 2000, 3000, and 4000 Hz. This threshold of 10 dB is crucial because it helps in detecting early signs of hearing loss that may be attributable to occupational noise exposure or other factors. Recognizing an STS allows for timely intervention and monitoring to prevent further hearing deterioration. Establishing this standard also supports compliance with hearing conservation programs imperative for safeguarding auditory health in noise-sensitive environments. Understanding the significance of a 10 dB shift can assist healthcare professionals and technicians in their evaluations and recommendations for patients or personnel exposed to potential hearing loss risks.