鼓膜破裂の臨床的検討

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  • A Study of Rupture of the Tympanic Membrane.

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A total of 230 patients (232 ears) with traumatic perforation of the tympanic membrane, including 132 patients of direct injuries and 98 patients of indirect injuries, visited the Department of Otolaryngology, Iwate Medical University, during the past 11 years (1980-1990).<BR>Of 230 patients, 98 patients with tympanic perforation due to indirect injuries were clinically studied in this paper.<BR>The results were as follows:<BR>1. As a cause, slapping was observed most freqently in 59 eras.<BR>2. In 71 ears, the size of perforation was small, and these perforations were observed more freqently in the anterior-lower quadrant of the tympanic membrane.<BR>3. The mean period for healing of a tympanic perforaion was in 26 days of the patients with a small tympanic perforation, and 37 days with a middle or large perforation. In most of cases, the perforation was healed spontaneously within 2 months.<BR>4. Good hearing recovery was obtained in most cases. In 11 patients with bone conduction hearing loss hearing recovery to normal range was obtained after healing of their tympanic membrane perforation.

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