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Title: Evidence-based Emergency Tracheal Intubation

Category: Critical Care

Posted: 5/21/2025 by Caleb Chan, MD (Updated: 7/21/2026)

DeMasi et al. published a review on the current evidence surrounding peri-intubation and intubation practices. While the actual approach and context to each patient will be different it is good to be aware of the actual evidence base for medical decision-making. 

Preoxygenation

  • NIPPV appears to decrease hypoxemia in all subgroups (including in those not requiring supplemental O2 prior to enrollment)
    • PREOXI trial
  • Data for HFNC over NRB is inconclusive

Between Induction and Laryngoscopy

  • BVM decreased hypoxemia vs. no-ventilation, without a higher risk of aspiration
    • PreVent trial

During Laryngoscopy and Intubation of the Trachea

  • Apneic oxygenation may increase the lowest oxygen saturation, but a much smaller benefit than pre-induction PPV

Medications

  • Induction
    • Still uncertainty re: differences in patient-centered outcomes for etomidate vs. ketamine
  • NMB
    • No rigorous evidence for rocuronium vs. succinylcholine (if no contraindications)

Interventions to Prevent Hypotension

  • Peri-intubation IVF boluses have not been shown to prevent hypotension, need for pressors, or cardiac arrest
  • Reasonable to have prophylactic vasopressors running or available, but evidence of potential serious dosing errors for push-dose

References

DeMasi SC, Casey JD, Semler MW. Evidence-based emergency tracheal intubation. Am J Respir Crit Care Med. Published online April 16, 2025.


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