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听神经瘤(前庭神经雪旺氏细胞瘤)切除术后听觉功能的保存是一个普遍关注的问题。临床已将BAEP用于术中听功能监护,但尚无用此方法对术后延迟性听力丧失进行预估的报导。作者对75例听神经瘤切除手术中的26例(29次手术)施行了术中BAEP监护。肿瘤平均直径3.2cm(含内听道部分)经枕下外侧进路切除全部肿瘤(包括内听道)。术中听功能完全丧失9例,听力完全保存9例。11例发生术后延迟性听力丧失。其它检查项目包括术前及术后PTA、语言测听及术后0.5～8kHz短声反应阈及BAEP(方法同术中)。术后复查CT显示肿瘤完全切除,除1例面瘫外,无其它并
Acoustic neuroma (Vestibular Neural Schwannoma tumor) after the removal of auditory function preservation is a general concern. BAEP has been clinically used for intraoperative monitoring of hearing function, but this method has not been reported for postoperative delayed hearing loss. The authors performed intraoperative BAEP monitoring of 26 patients (29 surgeries) in 75 acoustic neuroma resections. The average tumor diameter of 3.2cm (including the part of the internal auditory canal) resection of the entire tumor (including the internal auditory canal) through the suboccipital lateral approach. Intraoperative hearing loss was completely lost in 9 cases, hearing was completely preserved in 9 cases. Postoperative delayed hearing loss occurred in 11 patients. Other tests include preoperative and postoperative PTA, audiometry and postoperative 0.5 ~ 8kHz short-tone response threshold and BAEP (method with intraoperative). Postoperative CT showed complete resection of the tumor, in addition to 1 case of facial paralysis, no other and