Related Experiment Videos
Clinical assessment of auditory dysfunction
Abstract:
Many drugs, chemical substances and agents are potentially toxic to the human auditory system. The extent of toxicity depends on numerous factors. With few exceptions, toxicity in the auditory system affects various organs or cells within the cochlea or vestibular system, with brain stem and other central nervous system involvement reported with some chemicals and agents. This ototoxicity usually presents as a decrease in auditory sensitivity, tinnitus and/or vertigo or loss of balance. Classical and newer audiological techniques used in clinical assessment are beneficial in specifying the site of lesion in the cochlea, although auditory test results, themselves, give little information regarding possible pathology or etiology within the cochlea. Typically,, ototoxicity results in high frequency hearing loss, progressive as a function of frequency, usually accompanied by tinnitus and occasionally by vertigo or loss of balance. Auditory testing protocols are necessary to document this loss in auditory function.
Insights
Ototoxicity from drugs and chemicals can damage the auditory system, causing hearing loss, tinnitus, and balance issues. Early audiological testing is crucial for documenting these effects.
Area of Science:
- Ototoxicology
- Auditory Neuroscience
- Pharmacology
Background:
- Various drugs, chemical substances, and agents pose a risk of toxicity to the human auditory system.
- Auditory system toxicity can affect cochlear and vestibular organs, with potential central nervous system involvement.
Purpose of the Study:
- To summarize the impact of ototoxicity on the auditory system.
- To highlight the typical presentation and diagnostic considerations of ototoxicity.
Main Methods:
- Review of ototoxicity mechanisms and effects.
- Discussion of audiological assessment techniques for identifying ototoxicity.
Main Results:
- Ototoxicity commonly results in high-frequency hearing loss, tinnitus, and/or vertigo.
- The extent of toxicity is influenced by multiple factors.
- Auditory testing is essential for documenting functional loss.
Conclusions:
- Ototoxicity poses a significant threat to auditory health.
- Standard and advanced audiological tests are vital for diagnosis and monitoring.
- Understanding the etiological factors is key to managing ototoxicity.