Post-Intubation Paralysis with Awareness is Unacceptable

Post-intubation awareness is far more common in the ED than many clinicians realize, especially when long-acting paralysis outlasts inadequate sedation. Rocuronium, underdosed induction, and low post-intubation propofol rates are recurring drivers of awareness with paralysis.

Preventing Awareness During Paralysis

• ED awareness signal: Recent ED data put awareness with paralysis around 1 in 20 patients, a stark contrast to classic anesthesia estimates and a reminder that emergency intubation is a different risk environment.
• Rocuronium risk profile: Long-acting rocuronium is a major setup for awareness when sedation fades before paralysis does, with observational data showing much higher recall rates than in patients not receiving it.
• DSI over blind RSI: Delayed sequence intubation helps confirm the patient is actually sedated before paralysis, and a recent trial also found less peri-intubation hypoxia with better first-pass success. We get into when that tradeoff makes sense in the episode.
• Ketamine first choice: Ketamine is favored for induction because it can be titrated to effect and lasts longer than etomidate or propofol, giving useful overlap through the early paralyzed period.
• Propofol ready now: Post-intubation sedation should not wait for the drip to arrive; for most non-elderly adults, maintaining roughly 100 mcg/kg/min is the headline target while paralysis is still on board.
• Pressor protects sedation: Have norepinephrine in the room before intubation so hypotension does not force you to stop propofol; turning off sedation during paralysis is the exact failure mode to avoid.

Sedation and Comfort After Intubation

• Amnesia as backup: Benzodiazepines remain useful here for their amnestic effect, even if they are poor primary sedatives, and a small midazolam dose is advocated as added protection against recall.
• Etomidate mismatch problem: Etomidate is often a bad fit for the unstable patient because the hemodynamically cautious dose may be inadequate for hypnosis, creating a high-risk setup for awareness.
• Tube pain matters: The endotracheal tube is a major ongoing pain source, and good analgesia can reduce sympathetic stress and sometimes allow lower sedative requirements after paralysis wears off.
• Push-dose opioid strategy: Intermittent morphine or hydromorphone is preferred over an opioid infusion for tube discomfort in the ED, keeping analgesia practical without committing to another continuous drip.
• Why not fentanyl: Fentanyl is discouraged for post-intubation tube pain because its short duration makes repeated redosing impractical in real ED workflow. That bedside reasoning is worth hearing in the chapter.

References:

1. Pandit JJ, et al. The 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia: summary of main findings and risk factors. Anaesthesia. 2014;69(10):1089-1101. PMID: 25204236
2. Fuller BM, et al. Awareness With Paralysis Among Critically Ill Emergency Department Patients: A Prospective Cohort Study. Crit Care Med. 2022;50(10):1449-1460. PMID: 35866657
3. Driver BE, et al. Recall of Awareness During Paralysis Among ED Patients Undergoing Tracheal Intubation. Chest. 2023;163(2):313-323. PMID: 36089069
4. Bandyopadhyay A, et al. Peri-Intubation Hypoxia After Delayed Versus Rapid Sequence Intubation in Critically Injured Patients on Arrival to Trauma Triage: A Randomized Controlled Trial. Anesth Analg. 2023;136(5):913-919. PMID: 37058727