• Qiu-Rong Fu, Yan Wang, Shi-Bu Lin, and Yan Yang.
• Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, PR China.
• Medicine (Baltimore). 2021 May 21; 100 (20): e25728e25728.

BackgroundThere is an elevated risk of rebleeding when the aneurysm is left untreated in patients diagnosed with aneurysmal subarachnoid hemorrhage (SAH). Occlusion of the lumen of the aneurysm using endovascular coiling is a common method to prevent rebleeding by occluding the aneurysm. This study aims to evaluate the efficacy and safety of endovascular coiling in patients with aneurysmal SAH.MethodsA systematic search for relevant articles will be performed in 4 English electronic databases, including MEDLINE (from 1966 to October 2020), EMBASE (from 1980 to October 2020), the Cochrane Library (from 2020, issue 10), Scopus (from 1823 to October 2020), and 3 Chinese electronic databases, including Chinese Biomedical Literature Database (from 1995 to October 2020), WanFang (last searched October 2020), and China National Knowledge Infrastructure (last searched October 2020). This study will comprise randomized controlled trials (RCTs) that evaluate the effectiveness and safety of using endovascular coiling in the treatment of aneurysmal SAH. The articles in the databases will be independently screened by 2 authors to select potential studies, extract data, and evaluate the bias risk in the selected studies. This study will use suitable statistical methods to merge result data.ResultsThe results of this study will be useful in determining the efficacy and safety of endovascular coiling for treating patients with aneurysmal SAH.ConclusionThe findings of this study will summarize the most recent evidence on the effectiveness and safety of using endovascular coiling to treat aneurysmal SAH.Ethics And DisseminationThe present work does not involve any humans or animals; therefore, ethical approval is not needed.Systematic Review RegistrationDecember 2, 2020.osf.io/yj4gq (https://osf.io/yj4gq/).Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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