• Am. J. Respir. Crit. Care Med. · Aug 2024

    Evaluation of Etomidate Use and Association with Mortality Compared with Ketamine Among Critically Ill Patients.

    • Hannah Wunsch, Nicholas A Bosch, Anica C Law, Emily A Vail, May Hua, Burton H Shen, Peter K Lindenauer, David N Juurlink, Allan J Walkey, and Hayley B Gershengorn.
    • Weill Cornell Medical College, Department of Anesthesiology, New York, New York, United States; haw9006@med.cornell.edu.
    • Am. J. Respir. Crit. Care Med. 2024 Aug 22.

    RationaleUncertainty remains regarding the risks associated with single dose use of etomidate.ObjectivesTo assess use of etomidate in critically ill patients and compare outcomes for patients who received etomidate versus ketamine.MethodsWe assessed patients who received invasive mechanical ventilation (IMV), admitted to an ICU in the Premier Healthcare Database, 2008-2021. The exposure was receipt of etomidate on the day of IMV initiation and the main outcome was hospital mortality. Using multivariable regression we compared patients who received IMV within the first two days of hospitalization who received etomidate with propensity-score matched patients who received ketamine. We also assessed whether receipt of corticosteroids in the days after intubation modified the association between etomidate and mortality.Measurements And Main ResultsOf 1,689,945 patients who received IMV, nearly half (738,855; 43.7%) received etomidate. Among those who received IMV in the first two days of hospitalization, we established 22,273 matched pairs given either etomidate or ketamine. In the primary analysis, receipt of etomidate was associated with greater hospital mortality relative to ketamine (21.6% vs 18.7%; absolute risk difference: 2.8%, 95% CI 2.1%, 3.6%; adjusted odds ratio: 1.28, 95% CI 1.21,1.34). This was consistent across subgroups and sensitivity analyses. We found no attenuation of the association with mortality with receipt of corticosteroids in the days following etomidate use.ConclusionsUse of etomidate on the day of IMV initiation is common and associated with a higher odds of hospital mortality compared with ketamine. This finding is independent of subsequent treatment with corticosteroids.

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