Comparison of operative outcomes of eloquent glioma resection performed under awake versus general anesthesia: A systematic review and meta-analysis

Publication date: Available online 9 April 2018
Source:Clinical Neurology and Neurosurgery
Author(s): Victor M. Lu, Kevin Phan, Richard A. Rovin
Surgical resection of eloquent glioma can be achieved under general anesthesia (GA) or awake anesthesia (AA). The appeal of AA is that it facilitates intraoperative identification and avoidance of eloquent areas, which has the potential to minimize functional compromise. The aim of this meta-analysis was to compare the operative outcomes of eloquent glioma resection performed under GA compared to AA to assist in optimizing the decision algorithm between the two approaches. Searches of seven electronic databases from inception to December 2017 were conducted following Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. There were 1037 articles identified for screening. Data were extracted and analyzed using meta-analysis of proportions. A total of 9 comparative studies were included for analysis. Resection of glioma involving eloquent areas achieved under AA is mostly comparable in terms of operative and functional outcomes to that of GA. AA did demonstrate significantly lower incidence of postoperative nausea and vomiting (PONV, OR, 0.17; p < 0.001) and shorter length of stay (LOS, MD, -1.76 days; p = 0.02) when compared to GA. Future studies that are larger, prospective, randomized, and include long term quality of life metrics will assist in elucidating the true clinical benefit of AA in resecting glioma involving eloquent areas. This will assist in further developing management protocol of these glioma.



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