Nakatani Hiroaki, Yamakawa Kazuhiro, Hamada Masashi, Takeda Taizo, Kakigi Akinobu, Iwai Mitsuru
Department of Otolaryngology, Kochi Medical School, Nankoku, Kochi, Japan.
ORL J Otorhinolaryngol Relat Spec. 2010;71 Suppl 1:105-11. doi: 10.1159/000265112. Epub 2010 Feb 24.
The antidromic facial nerve response (AFNR) revealed that the initial lesion in both Bell's palsy and Hunt syndrome was mainly located around the geniculate ganglion within 1 week after onset of paralysis. The preoperative AFNR reflected the response near the initial lesion.
To review the initial lesion in Bell's palsy and Ramsay-Hunt syndrome using intraoperative monitoring of the AFNR.
15 patients, including 8 with Bell's palsy and 7 with Ramsay-Hunt syndrome, were checked for the AFNR before and during transmastoid decompression surgery within 1 week after onset of paralysis. The AFNR monitoring was performed at the posterosuperior part of the anulus tympanicus preoperatively and at 4 points of the facial nerve during surgery. The nerve conduction block sites were diagnosed by the AFNR waveform.
The monophasic wave revealing the block site was mainly observed at the geniculate ganglion in both diseases. The latencies of the preoperative responses corresponded to those recorded intraoperatively around the pyramidal segment of the facial nerve.
逆行性面神经反应（AFNR）显示，贝尔麻痹和亨特综合征在麻痹发作后1周内的初始病变主要位于膝状神经节周围。术前AFNR反映了初始病变附近的反应。
通过术中监测AFNR来回顾贝尔麻痹和拉姆齐-亨特综合征的初始病变。
15例患者，包括8例贝尔麻痹患者和7例拉姆齐-亨特综合征患者，在麻痹发作后1周内进行经乳突减压手术前及手术期间检查AFNR。术前在鼓膜环后上部进行AFNR监测，术中在面神经的4个点进行监测。通过AFNR波形诊断神经传导阻滞部位。
在两种疾病中，显示阻滞部位的单相波主要在膝状神经节观察到。术前反应的潜伏期与术中在面神经锥段周围记录的潜伏期相对应。
