Hall J W, Grose J H, Pillsbury H C
Division of Otolaryngology-Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill 27599-7070.
Arch Otolaryngol Head Neck Surg. 1990 Aug;116(8):946-50. doi: 10.1001/archotol.1990.01870080068018.
Past research has indicated that binaural hearing abilities are not always normal in patients having otosclerosis who have received bilaterally normal pure-tone thresholds through stapedectomy. This study investigated whether poststapedectomy performance on the binaural masking-level difference test could be predicted from presurgery tests in which the two ears were stimulated at an equal sound pressure level and at an equal sensation level. Results indicated that (1) binaural hearing usually improved following stapedectomy, though some patients maintained abnormally poor binaural hearing even though postsurgery pure-tone thresholds were normal; and (2) prediction of postsurgery results was poor, with postsurgery results often being underestimated from presurgery results. Results are interpreted in terms of possible forms of auditory deprivation and acoustic crossover.
过去的研究表明，在接受镫骨切除术后纯音听力阈值双侧正常的耳硬化症患者中，双耳听力能力并不总是正常的。本研究调查了在术前测试中，当双耳以相等的声压级和相等的感觉级进行刺激时，是否可以根据术前测试预测镫骨切除术后双耳掩蔽级差测试的表现。结果表明：（1）镫骨切除术后双耳听力通常会改善，尽管一些患者术后纯音听力阈值正常，但双耳听力仍异常差；（2）术后结果的预测效果不佳，术后结果往往被术前结果低估。根据听觉剥夺和听觉交叉的可能形式对结果进行了解释。
