May M, Klein S R, Taylor F H
Am J Otol. 1984 Oct;5(6):503-12.
Transmastoid surgical decompression of the facial nerve was found to have no positive effect in recovery from facial nerve function in patients with Bell's palsy. Since the risks of such surgery are greater than the benefits, this procedure should not be performed on patients with Bell's palsy unless a tumor is suspected. A mass lesion is suspected if there is complete paralysis and loss of response to evoked electromyography within the first 2 weeks after onset of the palsy or if there is recurrent facial paralysis on the same side. Rehabilitation surgical procedures should be reserved for patients with acute Bell's palsy with keratitis unresponsive to medical therapy or for those seen late in the course of the disease to correct undesirable sequelae.
经乳突面神经减压术对贝尔面瘫患者面神经功能的恢复并无积极效果。鉴于此类手术风险大于益处，除非怀疑有肿瘤，否则不应在贝尔面瘫患者身上进行该手术。如果在面瘫发作后的头2周内出现完全性瘫痪且对诱发肌电图无反应，或者同侧反复出现面瘫，则怀疑有占位性病变。康复性外科手术应保留给药物治疗无效的急性贝尔面瘫合并角膜炎患者，或疾病晚期出现不良后遗症的患者，以纠正这些后遗症。
