Long-term versus short-term hearing aid benefit

Area of Science:

• Audiology
• Hearing Science
• Biomedical Engineering

Background:

• Hearing aid technology has advanced, with Wide Dynamic Range Compression (WDRC) offering improved audibility.
• Long-term adaptation to new hearing aid amplification strategies requires investigation.
• Previous studies suggest varying acclimatization periods for different hearing aid technologies.

Purpose of the Study:

• To compare hearing aid benefit at 6 weeks versus a minimum of 1 year post-fitting.
• To evaluate the long-term effectiveness of WDRC hearing aids.
• To determine if extended use alters perceived and measured hearing aid benefit.

Main Methods:

• Fifteen participants with mild-to-moderate sensorineural hearing loss were fitted binaurally with Resound BT2 WDRC hearing aids.
• The Profile of Hearing Aid Benefit (PHAB) and Connected Speech Test (CST) were administered at 6 weeks and after 1 year.
• Standard manufacturer programming and fitting protocols were employed.

Main Results:

• Significant aided benefit was observed for both the PHAB and CST at the 6-week assessment.
• No statistically significant changes in hearing aid benefit were found between the 6-week and 1-year assessments.
• Individual results indicated consistent benefit across the study duration.

Conclusions:

• A 6-week acclimatization period appears adequate for evaluating the benefits of this type of WDRC hearing aid.
• Long-term use does not significantly alter the measured benefit obtained from WDRC hearing aids.
• Findings support the use of shorter trial periods in clinical settings for WDRC amplification.