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ÆíÃø¾È¸é°æ·Ã¿¡ ´ëÇÑ ¹Ì¼¼Ç÷°ü °¨¾Ð¼ú Microvascular Decompression for Hemifacial Spasm

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ÃÖâ¶ô/Chang Rak Choi ³ªÇü±Õ/ÀÌ°æÁø/Á¶°æ±Ù/¹Ú¼ºÂù/¹ÚÇØ°ü/Á¶Á¤±â/Hyoung Kyun Rha/Kyung Jin Lee/Kyung Keun Cho/Sung Chan Park/Hae Kwan Park/Jung Ki. Cho

Abstract

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The authors analysed the results of 300 microvascular decompression(MVD)
procedures for hemifacial spasm. The follow up period ranged from 6months to 3years.
Of these, 70% were women(mean age 54). The vessel most frequently found to
compress the facial nerve was the posterior inferior cerebellar artery(43.3%) followed by
anterior inferior cerebellar artery(26.7%). For the surgical results, 210 patients(70%) had
complete relief of spasm within 3 days after MVD, 65 patients(21.7%) subsequently
experienced complete relief noted in 4 days to 6 months after MVD, ten patients had
delayed partial relief and remaining 15 patients showed no improvement. Twelve patients
of these 15 unresponsive patients underwent reoperation without beneficial results.
Recently the authors have monitored facial elctromyography(EMG) intraoperatively to
observe the abnormal late response. There were few cases of permanant major
complications, including two cases of ipsilateral hearing loss, ataxia and no
operation-related death. These results suggest that MVD is a safe and definite
treatment for hemifacial spasm, if per-formed by experienced surgeon with gentle
operative technique, and with intraoperative monitoring such as auditory evoked potential
and facial EMG, better surgical results with less complications can be expected.

Hemifacial spasm; Microvascular decompression; Surgical results; Intraoperative facial EMG monitoring; Complication;

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