Vorwerk U, Penk S, Brosz M, Begall K
Medizinische Fakultät, Klinik für Hals-Nasen-Ohrenkrankheiten, Otto-von-Guericke-Universität Magdeburg.
Laryngorhinootologie. 1996 Apr;75(4):195-8. doi: 10.1055/s-2007-997562.
This paper will discuss whether long term conductive hearing loss leads to late onset auditory deprivation as described in the literature in patients suffering from bilateral sensorineural hearing loss and fitted with monaural hearing aids.
The patients were examined using the Freiburg speech test in the undistorted and distorted forms (according to Dieroff 1985), and the pure tone threshold was ascertained for each patient. Thirty-six preoperative und postoperative results after tympanoplasty and stapes surgery were evaluated. Follow-up was performed six weeks and six months postoperatively. Twenty-one test persons with normal hearing were investigated.
Comparison showed that the quotient obtained from undistorted and distorted tests is significantly higher in the affected patients. We even observed a highly significant improvement of this quotient, the speech recognition score (according to Bönninghaus/Röser), and the pure tone threshold after surgery. Seventy-eight percent of our patients showed an improved quotient, and 73% attained a normal value. But in only 29% of all cases did we see a symmetrical quotient in both ears in this period of time. In the statistical evaluation, we were unable to demonstrate a correlation between the patient's age at that moment, the age at the beginning of hearing loss, and this echo quotient. There is also no correlation between the absolute and relative change of the echo quotient and the duration of hearing loss.
It was evident that the distorted Freiburg speech test is a good method to demonstrate the deprivation of the auditory system. We observed the improvement of the distorted Freiburger speech test at postoperative intervals of six weeks and six months. Hearing training should be applied after surgery in an effort to improve the hearing results.
本文将讨论长期传导性听力损失是否会如文献中所述，导致双侧感音神经性听力损失且佩戴单耳助听器的患者出现迟发性听觉剥夺。
使用弗赖堡言语测试的未失真和失真形式（根据迪罗夫1985年的方法）对患者进行检查，并确定每位患者的纯音阈值。评估了36例鼓室成形术和镫骨手术后的术前和术后结果。术后六周和六个月进行随访。对21名听力正常的测试对象进行了调查。
比较显示，受影响患者从未失真和失真测试中获得的商显著更高。我们甚至观察到该商、言语识别得分（根据博宁豪斯/勒泽尔）和术后纯音阈值有非常显著的改善。我们78%的患者商有所改善，73%达到了正常值。但在这段时间内，所有病例中只有29%双耳的商是对称的。在统计评估中，我们未能证明患者当时的年龄、听力损失开始时的年龄与该回声商之间存在相关性。回声商的绝对和相对变化与听力损失持续时间之间也没有相关性。
显然，失真的弗赖堡言语测试是证明听觉系统剥夺的好方法。我们在术后六周和六个月的间隔时间观察到失真的弗赖堡言语测试有所改善。术后应进行听力训练以改善听力结果。
