Rapid Sequence Intubation in Pediatric Severe Croup

Indications for RSI

Severe hypoxemia unresponsive to oxygen therapy indicates critical respiratory failure requiring definitive airway control, as recommended by the American Academy of Pediatrics 1
Pan-retractions with biphasic stridor signify severe upper airway obstruction with exhaustion of respiratory muscles, necessitating immediate intervention 1
Agitation is a sign of hypoxia and impending respiratory arrest, not simply anxiety, according to the American College of Emergency Physicians 1

Position the child semi-upright to optimize oxygenation and reduce work of breathing, as suggested by the Society of Critical Care Medicine 2
Preoxygenate with high-flow oxygen via well-fitting mask for 3-5 minutes, though this may be limited by the child's agitation, as recommended by the American Society of Anesthesiologists 3
Have vasopressors immediately available, such as epinephrine infusion, as hemodynamic instability is common during pediatric RSI, according to the American Heart Association 1
Prepare for difficult airway by having a videolaryngoscope ready as first-line device, with smaller endotracheal tubes available, as suggested by the British Society of Anaesthesia 4, 5

Ketamine 1-2 mg/kg IV is the induction agent of choice, as it maintains cardiovascular stability and preserves airway reflexes better than other agents in critically ill children, according to the American Academy of Pediatrics 3
Rocuronium 1.2 mg/kg IV for neuromuscular blockade, ensuring full paralysis before laryngoscopy to prevent coughing and further airway trauma, as recommended by the Society of Critical Care Medicine 2, 3

Use videolaryngoscopy as first-line technique to maximize first-pass success and allow the operator to maintain distance from the airway, as suggested by the American Society of Anesthesiologists 3, 4
Limit attempts to a maximum of 3 attempts before transitioning to rescue techniques, according to the British Society of Anaesthesia 4, 5
Have a bougie immediately available to facilitate tube passage through the edematous, narrowed airway, as recommended by the American College of Emergency Physicians 4

Noninvasive positive-pressure ventilation (NIPPV) is contraindicated in this scenario because the child is agitated and hypoxic, making mask tolerance impossible, according to the Society of Critical Care Medicine 2
NIPPV is also contraindicated due to severe upper airway obstruction from laryngeal edema, which prevents effective positive pressure ventilation, as suggested by the British Society of Anaesthesia 4
Needle cricothyrotomy should not be the first-line approach and has significant limitations, including inadequate ventilation in patients with high airway resistance or poor lung compliance, according to the American Society of Anesthesiologists 4, 6, 7

Do not delay intubation waiting for the child to "calm down"—agitation indicates severe hypoxia requiring immediate intervention, as recommended by the American Academy of Pediatrics 1
Do not attempt awake intubation, as this is inappropriate in a hypoxic, agitated child and will worsen airway obstruction, according to the British Society of Anaesthesia 4
Do not use excessive positive pressure ventilation immediately post-intubation, as this can cause hemodynamic collapse, as suggested by the American Heart Association 1
Ensure full neuromuscular blockade before attempting laryngoscopy to prevent coughing and laryngospasm, as recommended by the Society of Critical Care Medicine 2, 3

Perform recruitment maneuvers to improve oxygenation after intubation, as suggested by the British Society of Anaesthesia 5