Risk factors of hearing loss following microvascular decompression for primary hemifacial spasm
GUAN Feng
ZHAO Weiguo
PU Chunhua
YANG Wenlei
LI Ning
Abstract：Objective To study the risk factors of hearing loss (HL) following microvascular decompression (MVD) surgery in the patients with primary hemifacial spasm (HFS). Methods The study included 130 patients with primary HFS who underwent MVD in our department from March, to September, 2016. Hearing function was evaluated with pure tone audiometry (PTA) before and 1 week after the surgery. The postoperative HL was defined as PTA value >50 dB combined with a decrease of PTA≥15 dB compared with preoperative conditions. The relationship of the factors including patient's age and gender, affected side, characteristics of offending vessel and facial/auditory nerves anatomy observed in MVD, and microscopic manipulation duration with the postoperative HL were analyzed by univariate and multivariate statistical methods. Results Twelve (9.2% ) patients developed HL after MVD. The univariate analysis showed that the factors related to HL after MVD included the vertebral artery pressure to facial/auditory nerves and long microscopic manipulation duration (P<0.05). The multivariate logistic regression analysis showed that the long microscopic manipulation duration was risk factor of postoperative HL (P<0.05). Conclusion Our study strongly suggested that the long MVD manipulation duration may be an clinical risk of HL after MVD in the patient with primary HFS.
Keywords：Hemifacial spasmMicrovascular decompressionHearing lossRisk factor
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 330-332 )