Table 5.
Minor laryngeal edema: | the presence of stridor (defined as an audible high-pitched inspiratory wheeze) and signs of respiratory distress. Signs of respiratory distress are a prolonged inspiratory phase and recruitment of accessory respiratory muscles as seen by subcostal, suprasternal or intercostal retraction. |
Major laryngeal edema: | respiratory distress needing tracheal intubation secondary to upper airway obstruction confirmed by direct or video laryngoscopy. |