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Article
March 1988

Measurable Residual Hearing After Cochlear Implantation

Arch Otolaryngol Head Neck Surg. 1988;114(3):237-239. doi:10.1001/archotol.1988.01860150019004

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Abstract

The status of residual hearing in patients who have undergone cochlear implantation was reported at the American Academy of Otolaryngology–Head Neck Surgery meeting in Chicago, Sept 22, 1987, by William F. House, MD, and Cathleen O'Connor, MA, of the Otologic Medical Group in Los Angeles. Unaided hearing thresholds (greater than 100 dB, SL) were identified in 26 adults and eight

children out of the 140 adults and 130 children who had received cochlear implants. Twenty patients (14 adults and six children) were available for the study. Twelve of 20 patients demonstrated significant improvement in unaided hearing thresholds, ranging from 6 to 26 dB, with an average of 14 dB. Four of these patients demonstrated progressive hearing loss in the implanted ear. All of these patients had undergone insertion with 14-, 16-, or 18-mm electrodes. Another patient who had undergone the insertion of with 14-, 16-, or 18-mm electrodes. Another patient

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