• Wei Zhang, Yi Liu, Jing Yu, Dongze Li, Yu Jia, Qin Zhang, Yongli Gao, and Xiaoyang Liao.
• Department of Emergency Medicine, Laboratory of Emergency Medicine, West China Hospital, and Disaster Medical Center.
• Medicine (Baltimore). 2020 Dec 24; 99 (52): e23917e23917.

IntroductionCardiac arrest refers to the sudden termination of cardiac ejection function due to various causes. Adrenaline is an important component of resuscitation among individuals experiencing cardiac arrest. The adrenaline delivery method chiefly involved intraosseous infusion and intravenous access. However, the impact of different adrenaline delivery methods on cardiac arrest has been unclear in previous research. Thus, the present study aimed to synthesize the available evidence regarding intravenous vs intraosseous adrenaline administration in cardiac arrest.Methods And AnalysisWe will search PubMed, EMBASE, Cochrane Library, Wanfang, and China National Knowledge Infrastructure. As per the inclusion criteria, randomized controlled trials (RCTs) on adrenaline administration in cardiac arrest were selected. The primary outcome was prehospital restoration of spontaneous circulation (ROSC); the secondary endpoints were survival, favorable neurological outcome at discharge, and poor neurological outcome at ≥3 mon.We plan to use the Cochrane Collaboration's tool for assessing the bias risk for RCTs. The Grading of Recommendations Assessment, Development and Evaluation approach will grade the certainty of the evidence for all the outcome measures across studies. RevMan 5.3.5 will be used for meta-analysis. If the heterogeneity tests show slight or no statistical heterogeneity, the fixed effects model will be used, in other cases, the random effect model will be used for data synthesis.Results And ConclusionThis protocol will determine which epinephrine delivery method is the optimal in the management of cardiac arrest. Our findings will help clinicians and health professionals in making accurate clinical decisions about adrenaline administrations in cardiac arrest.Ethics And DisseminationEthical approval was not required because this study was planned as a secondary analysis. The results will be disseminated in peer-reviewed publications, journals, and academic.Inplasy Registration NumberINPLASY202090100 (DOI:10.37766/inplasy2020.9.0100).Copyright © 2020 the Author(s). Published by Wolters Kluwer Health, Inc.

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