Audiometry Tests for Hearing Loss - Lesson 292
Audiometry tests are assessment processeses done to assess the hearing ability at different frequency level tolerance. These tests are useful in estimating hearing ability in patients with hearing difficulties. This procedure is also useful in diagnosing any diseases in the ear canal too. Sound threshold levels are calculated at different frequencies. The measurement unit of sound waves is decibels and it is termed in short as dB. Before undergoing an audiometry test, the patient will be asked about his past medical history and these queries will be helpful in detecting any sound exposures that lead the patient to get hearing difficulty. In some cases, the patient's eardrum may be affected and so the passage of sound waves to cochlea may be affected and so hearing loss might have occurred. Hearing Loss Audiogram: A special instrument is used to diagnose the hearing ability and the instrument used to do this assessment is called as audiogram. The sound frequency threshold