The old and new of acute laryngotracheal infections.

Laryngotracheal infections in childhood frequently result in airway obstruction, the major symptom of which is stridor. The primary aims of management are to establish a diagnosis rapidly and to maintain or secure the child's airway. Medical treatment and airway stabilization measures vary for the three most prevalent laryngotracheal infections--supraglottitis, laryngotracheitis, and bacterial tracheitis--as well as for older and newer infectious airway entities.