Hearing Preservation Rates After Cochlear Implantation Using Soft Surgery Techniques

Area of Science:

• Otolaryngology
• Neurosurgery
• Audiology

Background:

• Cochlear implantation is a common treatment for severe to profound hearing loss.
• Preserving residual hearing is a key goal in cochlear implant surgery.
• Soft surgery techniques aim to minimize trauma during implantation.

Purpose of the Study:

• To evaluate the trend of hearing preservation rates over a decade in adult cochlear implant patients.
• To identify factors influencing hearing preservation, including surgical techniques and perioperative management.
• To specifically analyze low-frequency hearing preservation.

Main Methods:

• Retrospective analysis of 10 years of adult cochlear implant patient data.
• Statistical analysis of hearing preservation rates against sex, age, steroid dose, and electrode type.
• Separate analysis for low-frequency hearing preservation.

Main Results:

• No significant differences in hearing preservation were found based on sex, age, or electrode type.
• Univariate analysis showed a significant improvement in hearing preservation with higher perioperative steroid doses.
• A small but significant correlation was observed between improved hearing preservation and later implantation year, particularly for low frequencies.

Conclusions:

• Hearing preservation rates have shown a slight but significant improvement over time with soft surgery techniques.
• Higher perioperative steroid doses are associated with significantly better hearing preservation, especially for low frequencies.