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Broadband Amplification as Tinnitus Treatment.

Mie Laerkegaard Joergensen^1,2, Petteri Hyvärinen¹, Sueli Caporali²

¹Hearing Systems Section, Department of Health Technology, Technical University of Denmark, 2800 Copenhagen, Denmark.

|June 24, 2022

Summary

Broadband amplification effectively reduced tinnitus distress and annoyance in individuals with high-frequency hearing loss. This treatment showed significant improvements compared to band-limited amplification, offering a promising therapeutic approach.

Keywords:

amplification hearing aids high-frequency hearing loss tinnitus

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Area of Science:

Audiology
Otolaryngology
Neuroscience

Background:

Chronic tinnitus often co-occurs with high-frequency hearing loss.
Current tinnitus treatments have varying efficacy, necessitating novel therapeutic strategies.
Understanding the impact of amplification on tinnitus perception is crucial for patient management.

Purpose of the Study:

To investigate the efficacy of broadband amplification versus band-limited amplification for tinnitus treatment in patients with high-frequency hearing loss.
To compare the effects of these amplification types on tinnitus distress, annoyance, and loudness.
To evaluate changes in tinnitus pitch following different amplification treatments.

Main Methods:

A double-blinded, crossover study involving 17 participants who completed a 3-month broadband amplification and a 3-month band-limited amplification protocol.
Tinnitus distress assessed using the Tinnitus Handicap Inventory (THI) and Tinnitus Functional Index (TFI).
Tinnitus loudness, annoyance, and pitch evaluated using visual analog scales (VAS) and psychoacoustic measures.

Main Results:

Broadband amplification led to statistically significant reductions in tinnitus distress (THI, TFI) and annoyance compared to band-limited amplification.
No significant differences in tinnitus loudness were observed, though a trend towards reduced loudness with broadband amplification was noted.
Tinnitus pitch remained unchanged across both treatment conditions.

Conclusions:

High-frequency amplification, delivered via broadband amplification, can significantly decrease tinnitus-related distress and annoyance in patients with high-frequency hearing loss.
Broadband amplification represents a potentially effective treatment modality for this patient population.
Further research is warranted to explore the mechanisms underlying these effects and optimize treatment parameters.