Speech audiometry before and after tympanoplasty.

概要

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The speech reception threshold and maximum discrimination score were analyzed in 158 patients with chronic otitis media before and after tympanoplasty.The air conduction threshold improved significantly in low and middle frequencies after tympanoplasty. The speech reception threshold also improved significantly, but the maximum discrimination score, did not change significantly.In the patients with improved speech reception threshold after tympanoplasty, the air conduction threshold was improved in the low and middle frequencies. In the same patients, however, there was no improvement in the high frequencies. On the other hand, in patients whose speech reception threshold was worsened after tympanoplasty, the air conduction threshold did not change in the low and middle frequencies and was aggravated in the high frequencies.In 60% of the patients whose air conduction threshold improved after tympanoplasty, the speech reception threshold also improved, while in only 20% of the patients whose air conduction threshold was aggravated after tympanoplasty, the speech reception threshold was also aggravated.These results suggest that both pure tone audiometry and speech audiometry are necessary to evaluate hearing differences before and after tympanoplasty.
耳鼻咽喉科臨床学会の論文