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面神经损伤后变性的形态学特征已很明确，而对变性进展的速度和范围还不清楚。该文作者对１例经乳突切除术发生同侧完全性面瘫２天的病人进行修复术，并作了电生理学和组织学研究。术前一天，即面瘫发生后一天，神经电科检查显示７６％出现复合肌动作电位（ＣＭＡＰ），术前（
The morphological features of degeneration after facial nerve injury have been clarified, but the speed and scope of the degeneration are still unclear. The author of a case of mastoid excision occurred ipsilateral complete facial paralysis for 2 days in patients with repair and made electrophysiology and histology. One day before the onset of facial paralysis, a neuropsychiatric examination showed that 76% of the patients had a compound muscle action potential (CMAP)