期刊
OTOLOGY & NEUROTOLOGY
卷 30, 期 7, 页码 975-980出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MAO.0b013e3181b0d04a
关键词
Acoustic neuroma; facial nerve; meta-analysis; surgery
Objective: To investigate the relation between hospital volume and preservation ratios of facial function in surgery for vestibular schwannoma. Data Sources: A meta-analysis was conducted on current literature concerning preservation ratios of facial function after surgical resection of vestibular schwannoma. Studies reported by the House-Brackmann grading system for facial function were searched; all studies were published in English in peer-reviewed journals between 1992 and 2007. Study Selection: Articles had to report 1) patients who had surgery for vestibular schwannoma, 2) House-Brackmann grades for facial function, and 3) calendar time and number of procedures. Data Extraction: Standard methods for meta-analysis were adapted. Data Synthesis: Data were pooled by weighing studies according to their accuracy. Results were sorted for low-, moderate-, and high-volume hospitals. Linear relations were quantified by metaregression analysis (n = 5,560). Conclusion: Findings of this meta-analysis suggest that there is a linear relation between hospital volume and preservation ratio of facial function. The concentration of surgical treatment might be a consideration to optimize clinical outcome. Prospective and nationwide registration of surgical results might contribute to more definitive conclusions regarding outcome of vestibular schwannoma surgery.
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