About this episode
The pediatric respiratory system differs significantly from adults, making children prone to rapid decompensation.• Airway Size: An infant's trachea is approximately 4 mm wide (vs. 20 mm in adults). Even 1 mm of edema can reduce the airway diameter by 50%, significantly increasing resistance and work of breathing.• Physiology: Children have higher metabolic rates and oxygen consumption (6–8 L/min vs. 3–4 L/min in adults), causing hypoxemia to develop more rapidly during distress.• Assessment Priorities: The first sign of respiratory illness is often tachypnea. Other critical signs include retractions (suprasternal, intercostal), nasal flaring, grunting, and head bobbing. Quiet chests in asthmatics can indicate severe obstruction (lack of air movement) rather than improvement.Croup (Laryngotracheobronchitis)Barking/seal-like cough, inspiratory stridor, low-grade fever.Cool mist humidity, corticosteroids (dexamethasone), nebulized racemic epinephrine.Monitor for rebound bronchospasm after racemic epinephrine wears off.EpiglottitisMedical Emergency. Drooling, agitation, tripod positioning, frog-like croaking, high fever.Protect the airway immediately. Prepare for intubation. IV antibiotics and humidified oxygen.NEVER visualize the throat (tongue blade) or obtain a culture; this may trigger complete airway occlusion.Bronchiolitis (often RSV)Copious thick secretions, wheezing, tachypnea, poor feeding.Suctioning (especially before feeds), hydration, and supplemental oxygen if sat
