Hearing Preservation and Improvement of Auditory Brainstem Response Findings after Acoustic Neuroma Surgery
作者： Masaru Aoyagi , Masashi Yokota , Tadashi Nakamura , Hitoshi Tojima , Yoshinori Kim
DOI: 10.3109/00016489409128299
关键词:
摘要: Among 9 patients with acoustic neuroma who underwent tumor removal by the middle cranial fossa approach during past 5 years, 6 were selected for hearing preservation surgery which was successful in cases (83.3%). For prediction of success hearing-preservation, factors related to preservation, including preoperative findings neurotological examination, analyzed. Postoperative threshold correlated significantly wave V latency and I-V interpeak auditory brainstem response (ABR) SP/AP ratio electrocochleogram postoperative facial palsy. The size tumors results speech audiometry did not correlate results. ABR normalized within observation period from days 10 months 3 hearing-preserved patients. Possible mechanisms improvement after are discussed.
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