outlet: Em docs blog 

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There was no difference in 28-day mortality in critically ill adult patients with ketamine vs. etomidate for rapid sequence induction (RSI), but ketamine increased the need for peri-intubation vasopressor support.

Source
RSI Investigators and the Pragmatic Critical Care Research Group. Ketamine or Etomidate for Tracheal Intubation of Critically Ill Adults. N Engl J Med. 2025 Dec 9. doi: 10.1056/NEJMoa2511420. Epub ahead of print. PMID: 41369227.