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Medicate to Intubate

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Overview

Pediatric Medications for Intubation

When it comes to pediatric intubation, choosing the proper medications is as critical as the procedure itself. You need the perfect balance of sedation, paralysis, and hemodynamic stability to ensure a smooth, safe intubation. Some drugs work fast but wear off quickly (like succinylcholine), while others provide longer-lasting effects (like rocuronium). Ketamine is great for hypotensive or asthmatic kids, while etomidate keeps things stable but isn’t ideal for septic patients. And don’t forget adjuncts like atropine for bradycardia or fentanyl for pain control. Below is a quick guide to the most common meds, their doses, and key considerations.

Medication Review

Here’s a comprehensive list of the most commonly used pediatric intubation medications, including name, dosing, administration, adverse effects, and other key considerations:

The RSI Medications

1. Induction Agents (Sedatives & Hypnotics)

Etomidate

  • Dose: 0.2–0.4 mg/kg IV
  • Administration: Rapid IV push
  • Onset: 30–60 sec
  • Duration: 5–15 min
  • Adverse Effects: Myoclonus, adrenal suppression, hypotension (rare)
  • Notes: Hemodynamically stable option; avoid in septic patients due to adrenal suppression.

Ketamine

  • Dose: 1–2 mg/kg IV or 3–4 mg/kg IM
  • Administration: IV push over 30–60 sec
  • Onset: 30–60 sec (IV), 2–4 min (IM)
  • Duration: 10–20 min
  • Adverse Effects: Increased secretions, laryngospasm, hypertension, tachycardia, emergence delirium
  • Notes: Preferred in hypotensive patients; provides analgesia and bronchodilation (useful in asthma).

Propofol

  • Dose: 1–3 mg/kg IV
  • Administration: Slow IV push
  • Onset: 15–45 sec
  • Duration: 5–10 min
  • Adverse Effects: Hypotension, bradycardia, respiratory depression
  • Notes: Potent sedative; avoid in unstable patients due to vasodilatory effects.

Midazolam (Versed)

  • Dose: 0.1–0.3 mg/kg IV (max 10 mg)
  • Administration: Slow IV push over 2–3 min
  • Onset: 1–5 min
  • Duration: 15–30 min
  • Adverse Effects: Respiratory depression, hypotension, paradoxical agitation (rare in kids)
  • Notes: Often used as adjunct sedation, weaker than propofol or ketamine alone.

2. Paralytics (Neuromuscular Blocking Agents)

Succinylcholine (Depolarizing NMBA)

  • Dose: 1–2 mg/kg IV (2 mg/kg for infants)
  • Administration: Rapid IV push
  • Onset: 30–60 sec
  • Duration: 4–10 min
  • Adverse Effects: Hyperkalemia, bradycardia, increased ICP, malignant hyperthermia
  • Notes: Contraindicated in neuromuscular disease, burns, crush injuries, hyperkalemia.

Rocuronium (Non-Depolarizing NMBA)

  • Dose: 0.6–1.2 mg/kg IV (higher dose for RSI)
  • Administration: Rapid IV push
  • Onset: 45–60 sec
  • Duration: 30–60 min
  • Adverse Effects: Hypertension, prolonged paralysis
  • Notes: Alternative to succinylcholine; longer duration.

RSI Bottom Line

RSI remains the gold standard for emergency intubation due to its ability to maximize first-pass success, minimize complications, and provide optimal conditions for airway management. The use of sedatives and paralytics in combination is essential to reduce patient discomfort, protect against aspiration, and optimize oxygenation, ventilation, and procedural success.

3. Premedications (Adjuncts for Special Situations)

Atropine (For bradycardia prevention)

  • Dose: 0.02 mg/kg IV (min dose 0.1 mg, max 1 mg)
  • Administration: IV push
  • Onset: 1 min
  • Duration: 30–60 min
  • Adverse Effects: Tachycardia, dry mouth, flushing
  • Notes: Use in infants <1 year or when giving succinylcholine.

Lidocaine (For ICP reduction)

  • Dose: 1 mg/kg IV
  • Administration: Slow IV push over 30 sec
  • Onset: 1–2 min
  • Duration: 10–20 min
  • Adverse Effects: Hypotension, dizziness
  • Notes: Used for traumatic brain injury (TBI) patients.

Fentanyl (For analgesia and blunting sympathetic response)

  • Dose: 1–3 mcg/kg IV
  • Administration: Slow IV push over 1–2 min
  • Onset: 1–2 min
  • Duration: 30–60 min
  • Adverse Effects: Respiratory depression, chest wall rigidity (high doses), hypotension
  • Notes: Use in TBI and cardiac cases; often paired with ketamine.

4. Post-Intubation Sedation & Analgesia

Midazolam (Versed)

  • Dose: 0.1–0.3 mg/kg IV bolus, then 0.05–0.2 mg/kg/hr infusion
  • Notes: Sedative; commonly used in continuous infusions.

Propofol

  • Dose: 1–2 mg/kg IV bolus, then 50–200 mcg/kg/min infusion
  • Notes: Avoid in unstable patients.

Fentanyl

  • Dose: 1–2 mcg/kg IV bolus, then 0.5–2 mcg/kg/hr infusion
  • Notes: Preferred for analgesia.

Dexmedetomidine (Precedex)

  • Dose: 0.5–1 mcg/kg IV bolus, then 0.2–1 mcg/kg/hr infusion
  • Notes: Causes sedation without respiratory depression.

Summary of Key Pediatric Intubation Medication Considerations

  • Ketamine is ideal for hypotensive, asthmatic, or trauma patients.
  • Etomidate is hemodynamically stable but suppresses the adrenal axis.
  • Propofol causes significant hypotension; use cautiously.
  • Succinylcholine is fast but contraindicated in neuromuscular disease, burns, or crush injuries. Watch for bradycardia in infants.
  • Rocuronium is a preferred paralytic if a prolonged blockade is acceptable.
  • Atropine should be considered in infants or repeat doses of succinylcholine.
  • Fentanyl and lidocaine can be useful for TBI cases.

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