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High-Tone Sensorineural Losses Following Chronic Ear Surgery
Tauno Palva, MD;
Juhani Kärjä, MD;
Antti Palva, MD
Arch Otolaryngol. 1973;98(3):176-178.
Abstract
In a series of 1,680 chronic ear operations high-tone hearing losses occurred in 75 cases (4.5%). The majority of losses (57%) were limited to the frequency range of 4,000 to 8,000 Hz, and only six (0.3%) involved the most important area of speech frequencies. Some recovery occurred in all ears during the first three postoperative months.
The results of special auditory tests were consistent with damage in the organ of Corti and are due to excessive movements of inner ear fluids, comparable to acoustic trauma. Certain surgical precautions are advocated, such as disarticulation of the incus before cleaning of the attic, dissection of the malleus in the direction of its handle, and conservative removal of granulations around the stapes.
Author Affiliations
Oulu, Finland
From the Department of Otolaryngology, University of Oulu, Oulu, Finland.
Footnotes
Accepted for publication Sept 19, 1972.
Reprint requests to Department of Otolaryngology, University of Oulu, Oulu, Finland (Dr. T. Palva).
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