面神经远端血管压迫对面肌痉挛手术疗效的影响

摘要

Objectiye To study the influence of distal portion compression of the facial nerve in hemifacial spasm surgery.Method 120 hemifacial spasm patients were undergone lateral spread response monitoring during microvascular decompression surgery.39 patients' LSR remained after decompression of the root exit zone of the facial nerve.After exploring the full length of distal portion of the facial nerve in the subarachnoid space, 19 patients were found distal portion vascular compression and were fully decompressed.The monitoring records as long as the surgical results were analyzed post - operatively.Results At the end of operations, 15 patients' LSR disappeared and 4 remained.The HFS disappeared immediately in 13patients.The post - operative spasm was weaker in 6 patients.After follow - up period of 8 - 14 months ( mean duration 12.7 months), all patients were spasm free and no reoccurrence case.Post - operative complications included:2 cases of transient moderate facial paralysis, 1 case of hearing loss, 3 cases of transient hearing impairment and 1 case of intracranial infection.Conclusions Distal portion compression of the facial nerve has influence on the result of microvascular decompression surgery.Distal decompression which identified by intraoperative monitoring can decrease the occurrence of delayed resolution and minimize the complications related with decompression of the vascular attached to the Ⅶ and Ⅷ nerve.%目的 探讨面神经远端血管压迫对面肌痉挛显微血管减压术疗效的影响.方法 采用监测面神经侧方扩散反应(LSR)的方法,对120例面肌痉挛患者进行术中监测,通过对39例单纯面神经根出脑干区减压后LSR未消失的病例探查而神经蛛网膜下腔段全长(面神经远端),发现19例面神经远端存在血管压迫,进行充分减压,记录监测结果并观察手术疗效.结果 手术结束时15例LSR消失,4例LSR未消失.术后面肌痉挛症状完全消失13例,减轻但未完全消失6例.随访8-14个月,平均12.7个月,所有患者面肌痉挛症状均完全消失,无复发病例.术后并发症包括:中度面瘫2例,均于随访期间恢复正常;听力丧失1例,未恢复;听力下降3例,随访期间1例恢复正常,2例较前好转;颅内感染1例,住院期间完全控制.结论 面神经远端血管压迫对面肌痉挛手术的疗效有明确影响,根据监测结果对其进行减压能够降低术后延迟治愈的发生率并减少盲目处理面听神经相关血管导致并发症的发生.