Introduction: This study compared wireless Contralateral Routing of Signals (CROS) hearing aid and bone-anchored hearing device (BAHD) in patients with single-sided deafness.
Methods: Eight adults with single-sided deafness previously implanted with a BAHD were given a 2-week trial with a CROS hearing aid and tested in unaided and aided conditions. Both devices were compared on head shadow effect reduction, speech perception measures in quiet and in noise, self-assessment questionnaires, and daily diaries.
Results: Both the CROS and BAHD significantly reduced the head shadow effect. QuickSIN scores were significantly better with noise presented to the poorer ear, as compared to the better ear, for the unaided condition, the BAHD, and the CROS. Scores showed no significant differences between the CROS and BAHD with noise presented to the better ear, but scores with the CROS were significantly poorer than in the unaided condition with noise presented to the poorer ear. There were no significant differences between BAHD and CROS for the ratings on the Bern Benefit in Single-Sided Deafness and Speech Spatial Qualities questionnaires. Both devices were worn an average of 10 hours per day. Four participants preferred the CROS for sound quality; three preferred the BAHD for comfort.
Conclusion: Comparisons of CROS and BAHD need to be re-evaluated as both technologies have evolved. In our pilot study, both devices seem comparable, with the CROS avoiding the risks of surgery, and we recommend a trial of CROS in our center for first line treatment of single-sided deafness.
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http://dx.doi.org/10.1097/MAO.0000000000000762 | DOI Listing |
JAMA Otolaryngol Head Neck Surg
January 2025
Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Importance: There is a lack of high level of evidence studies comparing the effect of different treatment options for single-sided deafness (SSD).
Objective: To determine the effect of a cochlear implant (CI), bone conduction device (BCD), contralateral routing of signals hearing aid (CROS), and no treatment on speech perception in noise outcomes in patients with SSD.
Design, Setting, And Participants: In this single-center randomized clinical trial, adult patients with SSD were randomized into 3 groups: CI; a trial period with first a BCD on a headband and then a CROS; or a trial period with first a CROS and then a BCD on a headband.
Brain Commun
January 2025
Centre for Cognitive Neuroscience, University of Salzburg, 5020 Salzburg, Austria.
Former studies have established that individuals with a cochlear implant (CI) for treating single-sided deafness experience improved speech processing after implantation. However, it is not clear how each ear contributes separately to improve speech perception over time at the behavioural and neural level. In this longitudinal EEG study with four different time points, we measured neural activity in response to various temporally and spectrally degraded spoken words presented monaurally to the CI and non-CI ears (5 left and 5 right ears) in 10 single-sided CI users and 10 age- and sex-matched individuals with normal hearing.
View Article and Find Full Text PDFJ Otol
October 2024
Department of Ear, Nose and Throat - Head and Neck Surgery, Ng Teng Fong General Hospital, 1 Jurong East Street 21, Singapore, 609606, Singapore.
To report a case of cochlear implantation with a misplaced electrode array in the vestibule and the causes for the delay in identification. A 23-year-old male with left single-sided deafness underwent cochlear implantation. The intraoperative assessment did not reveal any major red flags of electrode array misplacement.
View Article and Find Full Text PDFAm J Audiol
January 2025
Department of Otolaryngology, University of Utah, Salt Lake City.
Purpose: Unilateral cochlear implant (CI) recipients with limited hearing in the contralateral ear are deprived of the advantages of binaural hearing. To address speech recognition challenges arising from the head shadow effect, a contralateral routing of signal (CROS) device can be used; however, less is known of the broader impact of a CROS device on an individual's quality of life (QoL) or that of their frequent communication partners (FCPs). This preliminary study aimed to evaluate the impact of CROS on speech recognition in noise and its influence on the QoL of unilateral CI recipients and their FCPs.
View Article and Find Full Text PDFJ Vis Exp
December 2024
Department of Otolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health;
Single-sided deafness (SSD), where there is severe to profound hearing loss in one ear and normal hearing in the other, is a prevalent auditory condition that significantly impacts the quality of life for those affected. The ability to accurately localize sound sources is crucial for various everyday activities, including speech communication and environmental awareness. In recent years, bone conduction intervention has emerged as a promising solution for patients with SSD, offering a non-invasive alternative to traditional air conduction hearing aids.
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