Analysis of long term outcome and its influential factors of microvascular decompression for hemifacial spasm
Lu Guang
Zhu Hongwei
Zhang Yuqing
Tao Wei
Hu Yongsheng
Li Yongjie
Abstract：Objective To evaluate the long-term outcome of microvascular decompression (MVD) for hemifacial spasm, and analyze the influential factors related to the therapeutic efficacy. Methods Clinical data of 473 patients with hemifacial spasm undergoing MVD were analyzed retrospectively, including therapeutic efficacy, recurrence rate and complications. Ordinal logistic regression analysis was used to analysis the relative factors influencing the efficacy of MVD. Results The patients were cured in 359 (75.9%), relieved of their symptoms in 86 (18.2%), suffered ineffective treatment in 28 (5.9%), and the total efficiency was 94.1%. Ordinal logistic regression analysis showed that the severity of facial nerve compression and disappearance of abnormal muscle response (AMR) during MVD had a significant affect on the long-term outcomes (P<0.01). Eleven patients recurred and 5 patients received reoperation during the follow-up period. The postoperative complications such as facial paralysis, tinnitus and cerebrospinal fluid leakage got recovered, while a part of patients with hearing loss had no improvement during the follow-up period. Conclusions MVD is safe and effective for hemifacial spasm. Based on the premise of removing the compression of the responsible vessel, the long-term outcome of MVD is better in patients with pressure trace on the facial nerve and AMR disappearance during MVD.
Keywords：hemifacial spasmdecompressionsurgicaltreatment outcomelong-term
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 160-163 )