PMID: 15241230Jul 9, 2004Paper

The RetroX auditory implant for high-frequency hearing loss

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
P GarinJ Jamart

Abstract

The objective of this study was to analyze the subjective satisfaction and measure the hearing gain provided by the RetroX (Auric GmbH, Rheine, Germany), an auditory implant of the external ear. We conducted a retrospective case review. We conducted this study at a tertiary referral center at a university hospital. We studied 10 adults with high-frequency sensori-neural hearing loss (ski-slope audiogram). The RetroX consists of an electronic unit sited in the postaural sulcus connected to a titanium tube implanted under the auricle between the sulcus and the entrance of the external auditory canal. Implanting requires only minor surgery under local anesthesia. Main outcome measures were a satisfaction questionnaire, pure-tone audiometry in quiet, speech audiometry in quiet, speech audiometry in noise, and azimuth audiometry (hearing threshold in function of sound source location within the horizontal plane at ear level). : Subjectively, all 10 patients are satisfied or even extremely satisfied with the hearing improvement provided by the RetroX. They wear the implant daily, from morning to evening. We observe a statistically significant improvement of pure-tone thresholds at 1, 2, and 4 kHz. In quiet, the speech reception thres...Continue Reading

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