An audiogram is a graphic record showing the results of the pure-tone audiometry. It illustrates the type, degree, and configuration of hearing loss.
The frequency or pitch of the sound is referred to in Hertz (Hz).
The intensity or loudness of the sound is measured in decibels (dB).
Hearing thresholds are defined as the lowest dB sound that can be heard 50% of the time.
During a diagnostic hearing evaluation, the threshold is measured at different frequencies (or Hertz, Hz) in each ear.
Hearing or Audiometric Testing is required by the OSHA Occupational Noise Exposure standard, [29 CFR 1910.95(g)(1)], for all employees who work in an environment where the time weighted average (TWA) of noise is greater than 85 dBA. Employees should be given a baseline audiogram upon initial hiring, with audiograms given annually thereafter. The annual test is compared to the employee’s baseline to determine if hearing loss is occurring beyond the expected standard threshold shift.
In addition to completing the audiometric testing, Prime offers calculation and comparison of audiograms, upon request. The calculation and comparison will indicate if there is a STS (Standard Threshold Shift) that has occured from the time of the baseline to the time of the annual audiogram.
Confirmed by a retest, wihtin 30 days of the annual audiogram, the employee is evaluated by a medical physician, specializing in occupational medicine. In this evalutaion the medical physician will take into account all aspects of the employee’s work environment as well as the employee’s personal lifestyle. The medical physician will then provide the employer with a Written Medical Opinion depicting whether or not the loss is due to occupational causes.
Occupational NIHL(Noise Induced Hearing Loss) is the 2nd most common occupational illness for the American worker.
NIHL is non-reversable, the damage to the inner ear causes permanent hearing loss.