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Outcomes of Succinylcholine and Rocuronium for Rapid Sequence Intubation in the Emergency Department

O'Connell DH, Yeager J, Abrams RA, Zatarain JR, Paul KK, Goswami RR, Hill K, Farmer LR et al.

The western journal of emergency medicine, 2026

30,189 participants

Abstract

Introduction: Succinylcholine and rocuronium are neuromuscular blocking agents commonly used as paralytics in the emergency department (ED) during rapid sequence intubation. Prior studies have shown mixed results regarding the preferred agent aside from settings where there are contraindications. This study compares outcomes of death, myocardial infarction, and post-traumatic stress disorder for succinylcholine vs rocuronium when used in rapid sequence intubation using data from a large, multicenter database.

Methods: In this retrospective study, we extracted 105 million patient records from 61 healthcare organizations in the United States from the TriNetX database between 2004-2023. Adults ≥ 18 years of age who underwent intubation on the same day as an ED visit and received succinylcholine or rocuronium with the hypnotic anesthetic etomidate were included. The outcomes evaluated were mortality and myocardial infarction within 60 days after intubation. We excluded patients with prior history of myocardial infarction. We performed propensity matching for demographics and nine pre-existing conditions associated with mortality.

Results: There were 15,514 patients in the succinylcholine group and 14,675 patients in the rocuronium group for a total of 30,189 adults prior to propensity matching. The final cohort included 26,884 patients evenly divided between groups after propensity matching. Patients given succinylcholine were associated with a significantly lower risk of…

How strong is the evidence?

Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 30,189 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

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