Optimal Prehospital Intubation Drugs

Induction Agent Selection

The American College of Emergency Physicians recommends ketamine (1-2 mg/kg IV) as the preferred induction agent for prehospital intubation due to its sympathomimetic properties that maintain hemodynamic stability in trauma and critically ill patients 1, 2, 3
Ketamine provides relative cardiovascular stability through catecholamine release, making it particularly valuable in the unpredictable prehospital environment 2, 3
The Critical Care Medicine society found that historical concerns about ketamine increasing intracranial pressure in head injury patients are of little practical significance, and the drug is now frequently used in prehospital head injury cases 2, 3
Etomidate (0.3 mg/kg IV) serves as an alternative first-line agent, particularly in hemodynamically unstable patients, due to its minimal cardiovascular effects 1
The Critical Care Medicine society found no mortality difference between etomidate and other induction agents in critically ill patients 1

The American Heart Association recommends rocuronium (1.0-1.2 mg/kg IV) as the preferred neuromuscular blocker for prehospital RSI, providing excellent intubating conditions within 60 seconds 1
Succinylcholine (1-1.5 mg/kg IV) remains an alternative when no contraindications exist, though its numerous serious side effects limit its use 1
The Critical Care Medicine society recommends succinylcholine as first-line only when no contraindications are present 1

The American Society of Anesthesiologists recommends that most patients require a hypnotic drug (midazolam or propofol) to maintain sedation during transport after neuromuscular blockade 2, 3
Accidental awareness is more likely when neuromuscular blocking drugs are used, particularly in emergency patients with high pre-induction Glasgow coma scores 2, 3

The American Academy of Pediatrics recommends atropine (0.01-0.02 mg/kg IV, maximum 0.5 mg) should be administered before intubation in children aged 28 days to 8 years, particularly with septic shock, hypovolemia, or when using succinylcholine 4, 5, 6
Ketamine is the first-line induction agent for pediatric prehospital RSI, especially in hemodynamically unstable patients 4, 6

The American College of Emergency Physicians recommends never administering neuromuscular blockers without first ensuring adequate sedation, as this causes awareness during paralysis 1, 2, 3
Ensure vasopressors are immediately available before induction, as both ketamine and etomidate can cause hypotension in specific circumstances 1
Confirm correct tube placement with waveform capnography immediately and repeat each time the patient is moved 2, 3
Adjust ventilation to achieve normocapnia (end-tidal CO2 of 4.0-4.5 kPa) as abnormal end-tidal CO2 is associated with increased mortality 2, 3