Kartush J M, Graham M D, Kemink J L
Am J Otol. 1986 Sep;7(5):322-5.
Preservation of facial nerve function during acoustic tumor resection is an important goal. Patients with acoustic tumors who present with facial weakness may be at increased risk of postoperative facial paralysis. Subclinical tumor involvement of the facial nerve may be more frequent than is commonly recognized. A preliminary study was undertaken to assess the incidence of subclinical involvement of the facial nerve and to discern if such involvement had prognostic implications. Preoperative facial electroneurography (ENoG) was performed in thirteen patients undergoing surgical resection of acoustic tumors. Three of thirteen patients demonstrated preoperative facial weakness and ENoG was abnormal in all three of these patients. Of the ten patients with normal facial function preoperatively, eight revealed amplitude reduction on ENoG testing. Further study is required to discern the prognostic value of preoperative ENoG abnormalities.
在听神经瘤切除术中保留面神经功能是一个重要目标。患有听神经瘤且伴有面部无力的患者术后发生面瘫的风险可能会增加。面神经的亚临床肿瘤累及可能比通常认为的更为常见。进行了一项初步研究，以评估面神经亚临床累及的发生率，并确定这种累及是否具有预后意义。对13例接受听神经瘤手术切除的患者进行了术前面神经电图（ENoG）检查。13例患者中有3例术前表现为面部无力，这3例患者的ENoG均异常。在术前面部功能正常的10例患者中，8例在ENoG测试中显示振幅降低。需要进一步研究以确定术前ENoG异常的预后价值。
