微血管减压术辅以异常肌反应电生理监测治疗面肌痉挛
Clinical efficacy of microvascular decompression plus intraoperative monitoring of abnormal muscle response in the treatment of hemifacial spasm
目的 探讨显微血管减压手术中,辅以异常肌反应电生理监测治疗面肌痉挛的临床应用价值.方法 北京协和医院于2009至2010年对47例原发性面肌痉挛患者均采用显微血管减压手术,手术过程中间断电刺激患侧面神经颧支,记录同侧口轮匝肌肌电位的变化情况.手术后随诊5~22个月.结果 47例患者在手术开始时,均可在痉挛侧记录到异常肌反应信号.在手术过程中的不同阶段里,42例患者痉挛侧异常肌反应信号消失(其中4、9及29例患者的异常肌反应信号分别于剪开硬膜时、分离蛛网膜时、垫开责任血管时消失);全部42例患者术后未再发作面肌痉挛.5例患者异常肌反应波形在手术结束时仍未消失;随访中发现其中2例患者的面肌痉挛症状完全消失,3例患者痉挛程度较术前明显缓解.结论 显微血管减压手术中辅以异常肌反应电生理监测,可帮助判定责任血管,提高手术的疗效.
更多Objective To explore the clinical efficacy of microvascular decompression plus intraoperative monitoring of abnormal muscle response in the treatment of hemifacial spasm.Methods Between 2009 and 2010,a total of 47 patients underwent microvascular decompression for hemifacial spasm.There were 15 males and 32 females with an age range 23 -70 years old.During operations,intermittent electrical pulses were applied to stimulate the zygomatic branch of facial nerve at the spasm side.And evoked potentials were monitored in orbicularis oris.All patients were followed up for 5 - 22 months.Results The abnormal muscle responses were recorded pre-operatively in all 47 patients at the spasm side.In 42 patients,the abnormal muscle responses disappeared at the different stages of operations (4 while opening dura,9 while dissecting arachnoid membrane and 29 while separating responsible vessels).All 42 patients were cured during the follow-up period.In the remaining 5 patients,the abnormal muscle response were still recorded even at the end of operations.Two of 5 patients were free from spasm during the follow-up period while the symptoms of other 3 patients became obviously relieved.Conclusion The combined approaches of microvascular decompression and intraoperative monitoring of abnormal muscle response may assist the identification of responsible vessels and improve the outcomes of hemifacial spasm.
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