Which frequency range is primarily assessed for significant threshold shifts?

The assessment of significant threshold shifts predominantly focuses on the frequency range of 2000, 3000, and 4000 Hz. This range is critical because it is where hearing loss due to occupational noise exposure is most commonly observed. The mid-to-high frequencies in this range are particularly susceptible to damage from prolonged exposure to high decibel levels, which is why they are prioritized in hearing conservation programs.

Monitoring these specific frequencies allows for early detection of hearing loss in individuals who may be exposed to hazardous noise conditions. By identifying significant threshold shifts in this frequency range, health professionals can implement interventions and protective measures to prevent further deterioration of hearing. This proactive approach is essential in occupational settings to maintain employee health and comply with regulatory requirements regarding hearing conservation.