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This meta-analysis shows decreased episodes of repeat cardiac arrest when post-arrest shock was treated with norepinephrine vs. epinephrine, but there were no differences in survival or discharge with good neurological outcome.
Source
Norepinephrine versus epinephrine after cardiac arrest: A systematic review and meta-analysis. Am J Emerg Med. 2025 Sep;95:107-114. doi: 10.1016/j.ajem.2025.05.038. Epub 2025 May 22. PMID: 40440817.